The Blues booked their place in the semi-finals on the away goals rule after a 2-0 win at Stamford Bridge levelled the tie at 3-3 on aggregate.
"It was a fantastic game. It was an unbelievable feeling. There was no pressure on us because PSG were through," he told Sky Sports News.
"We needed patience to wait for the final goal in the last three minutes. We hit the bar twice, but we never gave up. Jose Mourinho knew the situation. He gave a few speeches to us. He told us to be patient."
The Blues were heading out of the competition until Demba Ba found the net in the 87th minute to send Stamford Bridge into a frenzy.