The only shots I see the X-Men having are Cyke's full force blast and Nightcrawler's "head teleport" attack. I'd imagine that since the Skrull has the Invisible Woman's shields + Mr. Fantastic and the Things durability he would have enough protection to prevent Cyclops from ending the fight. As for Nightcrawler's teleportation attack, as Grey Fox has already mentioned, the Skrull could use the Human Torch's power to quite literally make it impossible for Nightcrawler to get near him, much less actually touch him. I say the Skrull takes it 7 or 8/10.