Eucharistic Prayer
In the Eucharistic Prayer, the name of the Pope (since the Apostolic See is vacant) is omitted at the place where the congregation is invited to pray for the leaders (Pope, bishop and all the clergy) in the Church.
Eucharistic Prayers II and III provide a special memento for a Mass for the Dead. If they are used in a Mass celebrated for the late Pope, it is appropriate to use the memento to mention the name of the deceased Pope (for example, in Eucharistic Prayer II: “Remember John Paul II, whom you have called from this life. In baptism …”).