"It feels great," he told UEFA.com. "We put in an outstanding performance. The way in which we beat them was superb - we gave everything.
"Everyone battled and ran their hearts out. It was just the job. It's no secret that we have a lot of quality going forward. We've had some big wins recently, but to beat them like this in a game of this magnitude is just brilliant.
"Everyone knows how strong Barcelona are at home, but we're in a great position and if I know this team, we'll be doing everything we can to progress. Nothing has been decided yet, but things could certainly be worse."
The second leg will be held at Camp Nou next week.