Help with act 5 Ultron boss

I'm stuck at the final boss on act 5
How do I stop his power gain?

Comments

Don't parry or inflict a debuff while the power gain icon is showing.

What's your team?

Dr doom,angela, stark spidey, Og hulk and sunspot

Dr doom,angela, stark spidey, Og hulk and sunspot

use Angela sp attack

Dr doom,angela, stark spidey, Og hulk and sunspot
use Angela sp attack

Which sp?

Dr doom,angela, stark spidey, Og hulk and sunspot
use Angela sp attack
Which sp?

any she has armor breaks on all

Use White Magneto prefight

I packed magneto the red one.finally got ultron down

I am stuck as well.
My team is Photon, Thing, Hulkling, Doom, and Omega Red

Nvm