"We played in a controlled manner and I was pleased with the way we responded to going behind," the Boro boss said after the 3rd Round tie at Ashton Gate.
"It would have been easy to panic but we kept passing the ball.
"Lots of people were expecting City to beat us and if you get it into your own mind that there is a chance of an upset, then you can build it up into a bigger problem than it is.
"I wanted us to attack the game and be positive. We fielded as strong a team as we could as we had a lot of players missing and we were down to quite young professionals, so great credit to them."