A12s grav anom + radiant help

Hello, in timestop phase where the boss casts grav anom then radiant, there is a pattern that i find hard to consistently live thru as dps.

Its when coming from your defamation position you are surrounded by grav circles (front, left and right) then the boss casts radiant.

Example, see image: http://i.imgur.com/F6GumL0.jpg (top left pattern).

Now lets say you're positioned at the south defamation. So there's a grav on your left, right and front. To be followed by a radiant sacrament.

Running to the left/right on sprint, will kill you. But staying center and waiting for the grav to disappear, the radiant kills you.

So how can you consistently live through this?

(Note: Im a SMN so i dont have any jumps or teleports to quickly move through stuff, just sprint :) )