Munster ran in six tries, while JJ Hanrahan notched up 24 points from the tee, as Cardiff crossed the whitewash just once, through Owen Williams.
Davies was left frustrated after injuries disrupted his front row and he wants to see a very different approach when the Blues host Glasgow Warriors on Saturday.
"We have to turn it around for next week," said Davies. "We are not making excuses, but we do know we have got enough in our game to get back on the horse and go all out in that big game with Glasgow.
"The try we scored was fantastic and some of our defensive play was good.
"You have to say all credit to Munster, they cut loose and we are taking nothing away from them. We toiled away and our effort was admirable, but they were too good.
"But that ten minute period with 14 men finished the game for us. Credit to Munster and also to our boys for sticking in there under huge pressure."
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