The Lord turned and looked straight at Peter

Peter was in the very same place where Jesus Christ trial was taking place - Now the servants and officers had made a charcoal fire, because it was cold, and they were standing and warming themselves. Peter also was with them, standing and warming himself - John 18:18

And High Priest inquiring Jesus Christ about his disciples - The high priest then questioned Jesus about his disciples and his teaching - John 18:19

Its human nature to look at the person who have been inquired, but Jesus Christ neither looked at Peter nor spoke about him, but changed the topic and protected peter even at the moment of his trial - Jesus answered him, I have spoken openly to the world. I have always taught in synagogues and in the temple, where all Jews come together. I have said nothing in secret. Why do you ask me? Ask those who have heard me what I said to them; they know what I said - John 18:20-21