Daniel 6:28

6:28 So this Daniel prospered during the reign of Darius and the reign of Cyrus the Persian.

Daniel 10:1

An Angel Appears to Daniel

10:1 In the third year of King Cyrus of Persia a message was revealed to Daniel (who was also called Belteshazzar). This message was true and concerned a great war. He understood the message and gained insight by the vision.