Luke 9:18
And it came to pass, as he was alone praying, his disciples were with him: and he asked them, saying, Whom say the people that I am?
Cross-reference
Matthew 16:13
Parallel
Matthew 16:13 is the parallel account of Jesus asking who people say He is — same event, different Gospel.
Matthew 16:14
Parallel
Matthew 16:14 records the same disciples' answer — John the Baptist, Elijah, or a prophet — directly parallel.
Mark 8:27–30
Parallel
Mark 8:27-30 is the parallel account of the same question about Jesus' identity.