If you were to read the document in context, you would discover that Muslims are "first" AFTER considering:
Pope Boniface VIII, Unam Sanctam: We declare, say, define, and pronounce [ex cathedra] that it is absolutely necessary for the salvation of every human creature to be subject to the Roman Pontiff. "If, therefore, the Greeks or others say that they are not committed to Peter and to his successors, they necessarily say that they are not of the sheep of Christ, since the Lord says that there is only one fold and one shepherd (Jn.10:16). Whoever, therefore, resists this authority, resists the command of God Himself. " Pope Boniface VIII, Unam Sanctam (Promulgated November 18, 1302)
So them Catholics got a double standard going on or that pope guy wasnt so infallible after all.