Ah ok. Seems like These Final Hours still borrowed liberally from that story, because once again it is Australia, except this time they are just waiting for the firestorm to reach them after a massive meteor hit in the Atlantic and is wiping the world clean. And the movie ends on the beach no less, if I remember correctly. A quick google doesn't really show too many people making the comparison though, so maybe since I haven't seen them both I'm way off. Sounds really similar though. You might want to check it out all the same.