What is the precedent for Satan indwelling the Antichrist?
The precedent is Judas, whom Satan entered and literally took over and used. In the same way, Satan will indwell and control the Antichrist at the tribulation midpoint after being cast out of heaven, directing him against the escaping Jews.
Les explains that at the midpoint of the tribulation the Antichrist comes from his headquarters, likely in Europe, to Jerusalem. At that same moment Satan is cast out of heaven and indwells this man Antichrist. Les says that has happened before, and the best example is Judas: when Satan entered in and literally took over Judas and used him, so also will he do with the Antichrist, indwelling and controlling him. Then, when Satan in the man Antichrist sees the escaping group of Jews, probably quite a few thousand, he pursues them as Pharaoh sent an army after the escaping Jews from Egypt, though these Jews are under God's sovereign, mandated protection.