So this Daniel prospered in the reign of Darius, and in the reign of Cyrus the Persian.
So this [man] Daniel prospered in the reign of Darius and in the reign of Cyrus the Persian.
And so Daniel was made prosperous during the rule of Darius and during the rule of Cyrus the Persian.
Thereafter, Daniel continued through the reign of Darius until the reign of Cyrus, the Persian.