When Cornelius fell at Peter's feet to worship him, what did Peter say?

Answer: Stand up, I am only a man

Peter helped Cornelius up and said, "Stand up, I am only a man myself" (KJV: "I myself also am a man").

“As Peter was about to enter, Cornelius met him and fell at his feet to worship him. But Peter helped him up. “Stand up,” he said, “I am only a man myself.””— Acts 10:25-26 (BSB)