Luke 22:58
And after a little while another saw him, and said, Thou art also of them. And Peter said, Man, I am not.
Cross-reference
Matthew 26:71
Parallel
Matthew 26:71 describes the same second denial by Peter, with another servant girl accusing him.
Matthew 26:72
Parallel
Matthew 26:72 records Peter's second denial with an oath — parallel to the denial in Luke 22:58.
Mark 14:70
Parallel
In Mark 14:70, the second denial includes the accusation 'you are a Galilean,' adding detail not in Luke's account.
John 18:25
Parallel
John 18:25 records Peter's second denial similarly, with the same response 'I am not,' confirming the event across gospels.