Eto'o crossed for Ronaldinho to break the deadlock in the 19th minute before the Cameroonian striker sealed the victory in the injury time with a close range dink.

Ronaldinho missed an early chance to open the score line for Barcelona, who were held to a goalless draw in the first leg, when his penalty-kick was blocked by keeper Jose Moretto.

But the Brazilian playmaker made up shortly after when he sidefooted a low cross from Eto'o into the back of the net.

Simao almost leveled midway through the second period when he slammed the ball wide with goal at his mercy after receiving an inch-perfect cross from the right flank.

Barcelona confirmed their ticket to the last four, where they will play Milan, deep into the injury time when Brazilian defender Belleti crossed for Eto'o who fired a close-range bullet past Moretto.