Ultimate X-Men Collection, Book 8

Ultimate Cable comes from a tragic future to wreak havoc on mutantkind today, and his sinister secrets will shock the X-Men to their very core. In 'Sentinels', the X-Men are no more. The man from the future, Bishop, completes his own team of mutants, and their first task is to stop the attacks of the deadly Sentinels.

Collecting Ultimate X-Men #75-88.