Ok.. aura imo best: Aura of renewal : huge life regenaration and you get it on lvl 1.. and also : aura of defense.. I like aura of renewal most XD and grand aura you should also skill (slvl 30 tho) .. Shield of renewal: each point in Stamina increase the health per minute rate^^
Prayer of healing : 2-3 points into.
Anchor: Just good for boss farming.. 1 point for bosses etc..
Shield turn + Shield master(boni) : put as much points as you can into ^^
Sword of Reckoning: 1 point, with anchor for bosses etc

Challenge + Shield of faith: Challenge to keep them near you, means your shield turn will maybe hit more enemys, and more enemys in your aura.. shield of faith : After a fight to max your shields again, or before or so.. Not needed, but its nice to have imo.
Spiritual Strenght: Put points into or dont. Depends if you skill much strength by yourself, or not ^^
build :
http://hellgate.ingame.de/charplanner/guardian/?l=50&aa=0&a=00000000&s=a211110308070000002007100500Hope I could help ( using this build on my Guardian lvl 22 elite, like it actually, but playing BM atm^^) and sry for my bad english, skill tree should show you what i meant ^^
This post was edited by UnholyAlliance1 on Mar 17 2008 03:08am