The one most often meant is a list of prophecies on the reigns of the Popes, apparently by a medieval Irish monk Malachi, possibly the same as St. Malachi
prophecy | The Prophecy | Prophecy | Voice of Prophecy | Smoking Popes | Prophecy (film) | Mystic Prophecy | Year of Three Popes | Wing Commander: Prophecy | The Prophecy of the Stones | Smoking Popes Tribute | Shanshu Prophecy | Prophecy of the Popes | Prophecy of Merlin | Prophecy Girl | Palace of the Popes | Disciples II: Dark Prophecy | Church of God of Prophecy | Bible prophecy |