Also guard your healers as soon as phase 2 is going to start. During the transition, where you can't move you can switch guard during that time so when you popup on the plaforms healers are guarded.
Good call, I forgot to mention that in my post. If you don't trust your tanks to execute the taunt rotation properly then putting guard on the healers will help them out a little.
If your tanks can successfully do their job then these guards on healers are mostly wasted. I have our tanks switch their guards during the transition to people assigned to kill Anomalies. It will help reduce some of the damage they take while killing those.