This is quiet simple really, don't random queue, create a group with 2 Clerics and they will always be the first to engage since, you know, they are the leaders of the group ! They will put down 2 holy blue circles of sweet madness and from there, hack & slash the monsters. Rinse & repeat.
As a fellow Cleric suffering while doing T2 dungeons when I must solo heal them, let me shamelessly bump this thread. Of course I would like to see this "wonderful feature" disappear but if we must live with it, negate completely this debuff when we are in a group of 5, thank you, so stacking Clerics and Astral Shields…