If you're trying to solve the Newsday crossword and you got stuck on the clue ''Credo in __ Deum'' (Mass phrase) then you're in the right place! We've been working hard on this Newsday crossword puzzle, and after gathering all of the other hints and relevant information concerning the clue ''Credo in __ Deum'' (Mass phrase) we've finally found the answer. The answer we found for the clue ''Credo in __ Deum'' (Mass phrase) is: