Cristiano Ronaldo is firing back against allegations he raped a woman at a Vegas hotel back in 2009 -- saying, "Rape is an abominable crime that goes against everything that I am and believe in."
The soccer superstar is being sued by Kathryn Mayorga -- who claims she met CR7 at Rain Nightclub in The Palms hotel in June 2009 and he invited her up to his penthouse suite to party and hot tub.
There are photos of Mayorga and Ronaldo hanging out at the nightclub together that evening.
