Atziri : Something i don't get

I'm a discharger and i do quite a lot of damages, but there's something i just don't get. When she is in the third phase with all the "clones" i go attack the one at left as i've seen on many videos i start cycloning for my discharge, and few seconds after i got killed, like in 1 shot.

I tried several times with different clones, trying to dodge the flameblast (is it the reason??) but i just die like that each time while i do the first phases easily...

Can someone help me or want to show me how to do it properly in game (standard) this is very annoying as once again my char is quite solid for maps and i could destroy her if i mastered this phase.

Thanks

One of the Clones has a Mirror in her hands. This clone reflects 100% of the dmg she takes. Since you deal alot of damage it will kill you in 9 out of 10 cases instantly. Try to avoid the clone with the mirror at all cost. The Location where the Clone with the Mirror Spawns is random so you have to look where it is.

Oh it's random ><

Well i was thinking it as well so i tried various clones but its all the time the same story, i don't know if i'm one shooted by the flameblast even with purity of fire running that's pretty annoying.