Hilary of Poitiers — as excerpted in the Catena Aurea on Matthew 16:22-23

“The Lord, knowing the suggestion of the craft of the devil, says to Peter, Get thee behind me; that is, that he should follow the example of His passion; but to him by whom this expression was suggested, He turns and says, Satan, thou art an offence unto me. For we cannot suppose that the name of Satan, and the sin of being an offence, would be imputed to Peter after those so great declarations of blessedness and power that had been granted him.”