His angel

Then the king arose very early in the morning, and went in haste to the den of lions. When he came near to Daniel in the den, he cried with a troubled voice. The king spoke and said to Daniel, “Daniel, servant of the living God, is your God, whom you serve continually, able to deliver you from the lions?” Then Daniel said to the king, “O king, live forever! My God has sent his angel, and has shut the lions’ mouths, and they have not hurt me, because innocence was found in me before him; and also before you, O king, I have done no harm.”

Daniel 6:19-22

Daniel tells King Darius that God sent his angel and shut the lions' mouths.