Xenomorps vs Predators

The xenomorps were created to kill, you know, like if species leave their own planets and try to go out into space. I think that was tat was alien lace creditr on m, multiple levels, we lose. i just always remember this movie tag line from the poster, like, whoever wins, we losing. Di, don't want to know that about the Xenomorps either, exactly. No, was alien versus predator? Or was it jason versus fred alec?