I can not get past this as a IL 355 paladin. I posted this video on YouTube....
https://youtu.be/JfYR36L0rjM
I did manage to finally get past the phase w/ the two walls but only by using the Riot Blade / Goring Blade combo as it apparently does DOT when the main skills in Rage of Halone combo do not do any DOT. Still - I get pretty much smacked dead by meteor before I can get her to 1/2 health and/or take out 1 add in the next phase w/ the meteor timer bar thing.
BTW that's a bug - because there is a meteor strike in the phase w/ the 2 walls but NO indicator of the meteor casting like there is in the phase that follows it.
I have done this fight 30 times. 6 tonight. A fight this hard should not be in the MSQ. I'm almost going to have to wait until the next expansion to out itemlevel it when ILs are in the 420s.