Use a heal build and support your allies through the fight. Set them both on relentless and just keep them healed and buffed. Vera's electric bolt will nearly one-shot the two fire claws, and for the main part just tank the damage and wear it down. Any kind of silence or stun is a good idea to use on it.
sorry double post, but is there a better setup then what I am using which is reform x3, destroy, leading strike, that energy drain movex2,and the crystal shield.