Uncanny X-Men (Vol.1) #543

No one can stop Colossus! The Juggernaut has become Kuurth, Breaker of Stone, one of the Worthy. Now more powerful than ever, one of the X-Mens greatest enemies rampages through San Francisco. To stop him, Colossus makes a deal with the demon lord Cytorrak-the being that imbued Juggernaut with his power. Can this deal be one Colossus can back out of at the fights end? Prepare for the clash of two unstoppable forces!