PSG took control of the round 16 tie with a 5-2 first-leg win at the Parc des Princes.
Enrique began, wryly, "The keys? We scored three more goals than the opposition...
"Today, nobody talks about physical ability (laughs). When we lose, they say it's due to physical or mental problems. Yesterday, we had physical problems, and today we score three goals in the last ten minutes.
"It's multifactorial, as I said. Just like last year, when you told me it wasn't possible to win with such a young team. Those are clichés."
The Spaniard also said: "What made me the proudest? Pretty much everything. We had some difficult moments, but the atmosphere was incredible.
"We can play less well, well, or very well, but we always try to play, to attack, and this is a very good result tonight. Do I fear the return match? We coaches are always afraid, it's our mentality. We have to win the next match, but it will be difficult."