As Ulminati said before you probably need hold the line.
It regens and more importantly gives Protection (-33% dmg reduction) for a duration.
This is your main source of 'damage mitigation'
He's using Greatsword? Hmm. Odd.
http://www.gw2build.com/builds/simu....181.190.192.197.205.206.212.0.0.0.0.30.30.10
Here's what I run with:
I usually use staff for much better heal options (a total of 3 skill actually heal here)
Staff 1 - Regular AoE cone 160 degree forward spam. Hits up to 5 targets. VERY nice for fire and forget.
Staff 2 - Fires a damage orb. Can be detonated for heal but will trigger longer cooldown.
Staff 3 - Symbol of Swiftness actually does damage and buffs allies with speed. With Honor X Trait, you can heal with it too. So if there's a melee engaging a target, it helps to damage the target AND heal the guy standing on it. Tricky, but good fall back option.
Staff 4 - Gives 12 stack of might that takes a good chunk of time to complete it. You can get interrupted and only gain partial bonus, losing out on a big heal at the end of it.
Staff 5 - Pushes back melee a bit. But not very useful. Can setup combo light. But that's it.
And Scep/Shield for longer ranged dps and more protections spam with the shield.
Scepter 1 - Slow, terrible ranged attack at 900. The only viable choice for ranged Guardian.
Scepter 2 - Smite for a nice AoE spam. Might help if you use Sigil of Air (30% chance L-Bolt when crit) or something. Sigil of Water (30% heal chance is good too)
Scepter 3 - Immobilize and vulnerability 3 on target. Not very useful.
Shield 4 - Medium range damage and buff yourself + allies with protection.
Shield 5 - Bubble up - Protecting yourself and whoever is within your circle by knocking someone away and blocks projectile. Can be detonate to heal nearby allies.
Heal options
Staff 2 - Orb Detonate
Staff 3 - Symbol Trait Honor X
Staff 4 - Might stack 12 - Heal at the end of cast chain.
Shield 5 - Shield of Absorption - Detonate
Heal 6 - Healing Breeze - Cone heal yourself and people around you. This skill needs channelling. Dodging will break it. But keep in mind that Virtue AND Shouts do not. You can be literally knocked down on the floor and your Virtue/Shouts can still be spammed.
Utility 7 - Hold the Line - Protection and Regeneration Good stuff. Somewhat low cooldown. Trait Honor XI will make this remove conditions from your teammates. Essential when dealing with condition dungeons.
Utility 8 - Smite Cond. - Does small player-centred aoe damage - removes a condition. Trait Valor XII will make this self heal. At 16 sec (-20%) cooldown this is pretty much safe to spam when you lost 20% hp. It can also be cast when you're knocked down / stunned too.
Virtue F2 - Activate Virtue of Resolution for a small heal.
Inspired Virtue trait rank 5
Dodge
- Selfless Daring Trait - You heal nearby allies at the end your roll - Yourself included.
That's 10 skills you can employ to heal with this trait setup. You can go full Meditation for utility self-heals if you wish. But I find Merciful Intervention (Teleport to nearest party member and heal) very tricky to use. And the rest of the mediation gives nothing much that I want. Contemplation of purity cooldown is too long to take advantage of. Judge intervention teleports you to a target where you do small dmg and inflict burning. Not very useful and it's not where I want to be.
Protection Options
Virtue F3 - Activate Virtue of Courage to grant Aegis and Protection. - What a winner. They block the next hit and gets damage reduction.
Shield 4 - Medium range damage and buff yourself + allies with protection.
The Final Utility
Utility 9 - Stand your Ground. Retaliation and stability is granted to your team. Keep this as an emergency. Whenever you see stuns/knockdown, or condition you need to remove from your team, yet you ran out of options to remove, use this. Retaliation is an afterthought but does damage anyway when your team is hit. Can be swapped with Save Yourselves if you want more dps out of yourself, but it has a longer cooldown. Once again, Shout can be used even when you're disabled and it will not interrupt casting animations or channeling. Good shit.
Elite - Renewed Focus.
This is probably the best elite you go for Dungeon runs. Consider this: You have the opportunity to give 10 second of protection and double aegis. As well as 2 small heals and 2 Might stacks within a window of 3 seconds.
I usually use this when in panic mode. F1 F2 F3 0 F2 F3 - Virtue spammed. 10 seconds of Might 10 seconds of Protection 2 Aegis and 2 Regeneration + 2 Heals. Holy F. Oh, it also gives you 2 seconds of invulnerability. Clearly not overpowered.
If you need DPS - You can try tome of wrath #4 then #3 then spam #1. But my team usually dies when I neglect heals. I wonder why....
Tome of Courage is a pure heal moment for the guardian - but his casting is kinda slow.. you will get knocked down / interrupted when spamming that 1.5k heals. It does work in a pinch but I prefer Renewed Focus since the Cooldown makes it nearly spammable (90 secs) in a protracted boss fights. (ALL BOSS FIGHTS ARE MORE THAN 10 MINS LONG)
Gear wise, go for Vit/Prec/Heal - I wish there's Vit/Tough/Heal but there isn't any from my favorite dungeons.
Hope it helps.