The Dutchman's strike, along with a Thomas Muller brace and a Mario Gomez goal, helped the Bundesliga champions to a 4-0 win over the La Liga leaders in the first leg of their semi-final clash at the Allianz Arena.
"That is the strength of this team, we will keep focusing, there is always the next game. Let's stay concentrated, not talk too much and just play our football," Robben told Sky Sports News. "I think it is quite impressive, the way we played. We can be very proud of tonight's game, we deserved the win.
"We didn't give them any opportunity to play their football. We have a lot of quality in the team and we can also score goals. The key to our performance tonight was that we played as a team, we fought for every metre and it was a great game.
"In these games you have to stand up as a player and as a team and I was happy about tonight. The most important thing was that we kept the field very compact and that's why we didn't give them any space to play. We made it very difficult."
The second leg takes place at Camp Nou next Wednesday.