Those are a lot of assumptions. Does "alive" mean the same thing? Do they have individuals who breed and are born and die? Or are they some kind of hive mind that's essentially immortal, even though parts of it may wear out and have to be replaced? Does a hive mind need to communicate in the same way that we do? Obviously, to have an advanced technological civilization, they would have to understand math and other things we call science, although those things could possibly be much more intuitive to them, if "intuitive" has any meaning here.
An argument I have been trying to use to shake Christian fundamentalists out of their madness is to talk about what Jesus would be like in an alien civilization.
Now may people just think of Jesus as a social genius who was born at a time when the Roman empire had taken over and enabled broader travel and communication, and much of the mysticism around him was filled in later by his followers. Also, Jesus may really be a composite of multiple people of that time.
But let's pretend Jesus was God. Surely aliens would be sinful and need to be saved and all that. (In this scenario, "original sin" is something that evolves naturally in creatures that develop the ability to imagine non-immediate events and can make conscious choices that we would consider unethical.) On earth, death has been a big deal to humans, so martyrdom for Jesus isn't especially necessary for atonement (because God could have chosen any means he wanted). Rather, it's just fabulous marketing. What better way to spread a religion than to teach a bunch of disruptive ideas and then get gruesomely killed by the Romans?
So in an alien society, the "sacrifice" of their incarnation of Jesus would be entirely different. For instance, let's say that we have a hive mind creature that can temporarily split off individuals (or how else would they be able to explore their planet broadly and go into space?), and as a result of that need to do this unnatural splitting off, they have developed communication strategies. But let's say that staying disconnected from the hive for a long time is detrimental to that individual in some horrific ways. So an example of a personal sacrifice here, in a world where death doesn't mean much, might be for an individual to live out a disconnected life and utilize these invented communications methods to teach his message.
I'm not sure if the argument will work, because most fundamentalists just deny that aliens could exist.