John 18:10 identifies the slave Peter struck as Malchus—the relative of the accuser now questioning Peter in this scene.

Matthew 26:73 adds that Peter's Galilean accent gave him away—a detail not in John's account of the same denial scene.

Mark 14:71 adds that Peter cursed and swore during his third denial — intensifying the scene beyond John's account.

Luke 22:59 specifies the timing as 'about an hour later' and mentions the accuser's certainty because Peter was a Galilean.

Luke 22:60 records Peter's exact words 'I do not know what you are saying' and the immediate rooster crow.