You’re assuming quite a bit about the eternal fate of said martians, if they even have a fate at all. Perhaps said aliens are the “sons of heaven” as some christians have believed and were never in need of salvation. We can speculate about it all we like, but we can not make any concrete statments. What is certain is that not every major interpretation of the bible holds that aliens would need salvation.
But this would make us second class galactic citizens rather than them. Why should you and I need salvation from something someone else did?