I don't say this often, but... seriously, L2P. You can set your fairy to follow, hit the buff, and then conceal it. Not only do they take no AoE damage, they take no damage at all then.
the fairies DO take damage when conceal is active.this has been broken since i started.
my opinion is that the fairies need some more hp,they die 1 hit from mobs.
i have been a priest for my entire time in this game and i did bring this up a couple years ago.
as soon as the priest attacks or gets attacked the fairy will attack.
while it is a pain to summon all the time while questing it seems to function somewhat in instances.
any aoe will kill the fairy.