The Green Lantern (2011)

A man is granted a mystical green ring that bestows him with otherworldly powers, as well as membership into an intergalactic squadron tasked with keeping peace within the universe. Test pilot Hal Jordan (Ryan Reynolds) is given a ring which grants super-powers by a dying alien and recruited into an intergalactic peace-keeping force. Hal tries to avoid the responsibility, but a threat to the Earth and the Green Lantern Corps forces him to become a hero.