Mourinho said: "It was a fantastic performance full of heart, desire, emotion and unity. However, we need more. I think nine points are enough to go through, so we need three from the next two matches against Barcelona and Rubin.
"Tonight with a draw or a defeat it still would've been possible, but very complicated. We stepped into this stadium last and left at the top."
Mourinho added: "I would be very disappointed if in our last home game San Siro wasn't sold out against Rubin. This team deserved the enthusiasm of its supporters.
"We'll play at home against Rubin, a side that have already proved their quality, but I think we absolutely must win that game.
"Obviously there's no reason we can't get points in Barcelona too, but it is very important to have that last tie on home turf."