Originally posted by OnslaughtKILLS
Yes, he doesn't even know we are going to attack.
Have Dr. Doom recreate this device...
http://img239.imageshack.us/img239/9431/duplicatespowercosmicka0.jpg
http://img404.imageshack.us/img404/3209/duplicatespowercosmic2ld2.jpg
And use it to replicate the power of the Fallen one. But instead of using it to power a robot transfer the Power Cosmic directly to all of your teammates. The device drained relatively small amount of power from the Surfer so you should be able to share his powers with at least 3 or 4 members of your team before it starts to wear him out and when that happens you now have 3 or 4 people with power equal to his own to re-power him(allowing the process to continue until your whole team is powered up).
Now as far as the actual battle goes just have the rest of your team attack Firestorm head on(and the Power Cosmic added to their own considerable abilities will allow them to do that with ease) while Doom hangs back to reverse any transformations to your team with the Power Cosmic(which Doom is already adept at using from his time with Surfer's powers).