Awww....i was going to use the fire too....and i still will.

Ok Marowak use Double team to dodge the Fireblast. If you have clones left then wait for him to use Dark Pulse and answer Back with your own Fireblast before Dashing in and trying that Focus Blast one more time! I know you'l get hit by Flamethrower but i know you can take it!

Double Team - Fireblast - Focus Blast