Matthew 17:8

And when they had lifted up their eyes, they saw no one except Jesus only.

Mark 9:8

And suddenly, when they had looked around, they saw no one any more, except Jesus only with themselves.

Luke 9:36

And when the voice was past, Jesus was found alone. And they kept silent and told no one in those days any of those things which they had seen.

Acts 12:10-11

When they were past the first and the second guard, they came unto the iron gate that leads unto the city, which opened to them of its own accord, and they went out and passed on through one street, and then the angel departed from him.

Treasury of Scripture Knowledge

Summary

And when they had lifted up their eyes, they saw no man, save Jesus only.

Bible References

They saw

Mark 9:8
And suddenly, when they had looked around, they saw no one any more, except Jesus only with themselves.
Luke 9:36
And when the voice was past, Jesus was found alone. And they kept silent and told no one in those days any of those things which they had seen.
Acts 12:10
When they were past the first and the second guard, they came unto the iron gate that leads unto the city, which opened to them of its own accord, and they went out and passed on through one street, and then the angel departed from him.