The experienced defender has admitted that Malaga await a difficult second leg, but is still hopeful they can make it to the next round
The Argentine defender realises that los Boquerones face a tough task to secure progress at the Westfalenstadion next week, but believes his side have already shown in the past that they can score anyway.
"Amongst the positive things from this performance is that we didn't concede. OK, it'll be difficult in Dortmund, a stadium where you always come under a great deal of pressure," he told Uefa.com.
"But my view, from experience, is that while we'll show them respect we won't go to Germany suffering any kind of fear about what might happen.
"The tie is still totally open. It's also only 11 vs 11 and there are thousands of examples in this competition to say that we can go to Dortmund and score. We did so at San Siro, we did so in Russia and I see no reason why we shouldn't do so again in Germany.
"Dortmund are a dangerous, high-quality side but our squad is full of real men. We'll take the battle to them over there.
"In this leg they might have had the more dangerous chances but we had our moments and we only lacked that clinical, finishing touch.
"We got ourselves time to be comfortable on the ball as the match went on and we made life complicated for them.
"The tie will be decided by who makes the fewer mistakes next time. We'll show intensity and belief to have a go at making the last four. We'll give it everything."
Malaga resume domestic match action on Saturday when they take on Real Sociedad.