What would religious leaders do if aliens did show up?

I thoroughly enjoy watching shows about UFOs...NOT so much because I believe...or even want to believe other intelligent life forms have visited the earth...either recently or in the very distant past, but that the mysteries they talk about are interesting stuff to think about. 

If aliens 'showed up' I think there's a good chance they won't look anything LIKE what we can imagine so religious leaders won't know any more how to 'deal' with them or think of them than non-religious.  IOW, I absolutely don't imagine it'll be the bipedal humanoid creatures that look like humans wearing masks and funny looking gloves like we see in many sci fi movies/shows.  I would imagine the first extraterrestrial 'life forms' won't be life forms at all, but highly intelligent robots that will only be evidence that there are other intelligent life forms out there capable of building robots with functional AI.