Divine Awakening is a summoned object. Just like "Summon Food and Water" you target a member of your group and cast. Also similarly, it can't be cast during combat, so treat it like a buff and hit the group individually with them before you start fighting.
It drops a no-rent no-trade divine essence into their inventory that can be used once later to rez a fallen comrade.
The obvious tactical benefit to this is making sure as long as one member of the party survives, the priest can be rezzed and therefore the rest of the group, so no one has to make a shard run.
Personally I give one to everyone in the group, whether it is used for me, or later -- it's just good to have one on you.
Edited, Thu Nov 18 10:09:54 2004 by Enithea