The Apocalypse of Peter is a book from the Bible that talks about the end of the world and what will happen when it comes. In the book, Jesus tells Peter that people will suffer as the world comes to an end. He says that many people will die and that there will be earthquakes and disasters that will cause destruction. He also talks about judgement day and how people will be judged. So when we talk about the "apocalypse of Peter" we are talking about the destruction, judgement and end of the world that will happen one day.