You haven’t seen the last of the “Riz God.” “Survivor 49” fourth-place finisher Rizo Velovic exclusively told The Post how he got the invite to compete on “Survivor 50,” the upcoming milestone season featuring 24 all-star players. “It was unreal because as a ‘Survivor’ fan, like a true student of the game, only less than ten people have ever done what I’m going to do — go back to back,” Velovic, 26, said. “And the fact that I got back to back for ‘Survivor 50,’ arguably what’s going to be the biggest season of all time. They saw potential in me. It was game-changing.”