User blog comment:Zero15/Code Geass R3/@comment-204.195.22.122-20130204091847

suzaku didnt have a geass, Lelouch used his geass powers on suzaku to make him no matter what in any situation stay alive, so he called it "his geass" because whenever he is in danger Lelouch's geass command to stay alive kicks in and he stays alive. So that answers your question.