Classic X-Men #43

In "The Fate of the Phoenix!", the X-Men find themselves on the Blue Area of the Moon, caught between the Imperial Guard and the will of Lilandra, who demands Jean Grey be executed for the destruction of a star system. With Xavier pleading for a trial by combat and the Phoenix Force stirring once more, the battle for Jean’s fate begins — and the line between hero and monster blurs. Written by Chris Claremont and John Byrne, with art by Byrne and inks by Terry Austin, this pivotal issue features a cover by John Byrne that captures the cosmic stakes in bold, dramatic detail.