Marvel Masterworks: Uncanny X-Men Vol. 3
Chris Claremont (Writer), John Byrne (Artist)
Hated and feared by a world they are sworn to protect, the X-Men face off against some of their most unforgettable foes - including Magneto, Mesmero, Garrok the Petrified Man, Sauron, Moses Magnum and Alpha Flight.
X-Men (first series) #111-121
Also collected in "Uncanny X-Men Omnibus".