Could anyone tell me if in any belief(temple, Cult, others) there is a doomsday when all life will be destroyed or along those ideas? just wondering

There was that bit about a mass invasion a daedra (the central belief of the End-of-Times Cult), but that turned out to be a bit of a non-event. That's about all there was really. There is no end of the world in the foreseeable future.

http://www.imperial-library.info/obscure_text/5th_era_loveletter.shtml is the only thing I can think of right now. Note that the linked text focuses moreso on how to AVOID it rather than the event itself.

The only people who believe in Landfall are the Temple Zero. That's us, or at least the mind[censored] part of this forum.