Matthew 17:8

When they looked up, they saw no one but Jesus himself.

Mark 9:8

And suddenly, on looking around, they saw that there was now no one with them but Jesus alone.

Luke 9:36

At the sound of the voice, they saw that Jesus was alone. And they kept silence, and said nothing about it to anyone at that time.

Acts 12:10-11

They passed the first guard and then the second, and came to the iron gate that led into the city. It opened to them of itself, and they passed out and went along one street, when suddenly the angel left 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, on looking around, they saw that there was now no one with them but Jesus alone.
Luke 9:36
At the sound of the voice, they saw that Jesus was alone. And they kept silence, and said nothing about it to anyone at that time.
Acts 12:10
They passed the first guard and then the second, and came to the iron gate that led into the city. It opened to them of itself, and they passed out and went along one street, when suddenly the angel left him.