How do you get past Quest with Symb Supreme on Buffed Up and pilfer regeneration?

You need 3 buffs applied to yourself before you can do damage, but he keeps nullifying them? Can someone tell me how I can get past him in the quest ? I even tried to turn on the masteries for Liquid Courage and Double Edge, but it doesn't seem to work still?
0
Comments
I used Venom.
Her sig ability is her buffs have an 80% chance to not be nullified
Then again I was running suicides when I took him down. Un-suicided, not 100% sure whether you could DPS him down before he gets through his full buff cycle.
Watch the end of this