For phase 2 we try to rotate healers cooldowns just like on phase 1, except that now you should expect to get 3-4 F&V... If you get 4 you might run out of cds, I'd have priest spir shell 1st (so it should be up again on 4rth), monk's cd (which is weak) on 2nd (maybe with you going ToL to help out), tranq 3rd, priest spir shell 4rth. Do you have warrior? Make him pop that damage reducing banner on whichever F&V ppl are dying the most. Also, you can call for ppl to use their lock stones (if u got one) etc...
As a resto druid I really like being able to save ppl's ass while moving on discs. We had 2 dpsers dying to that shit all the time and I started to keep LB up on one with rejuv and tossed another rejuv on the other one with SM ready to save whoever is about to die