Anfield hero Dejan Lovren hailed Liverpool's never say die spirit as they fought back to claim an "amazing" Europa League quarterfinal victory over Borussia Dortmund on Thursday.

Jurgen Klopp's side looked destined to crash out when they fell behind 2-0 and then 3-1 in the second leg of their last eight tie.

The Reds, who had drawn 1-1 in the first leg in Germany, stormed back to equalise through Philippe Coutinho and Mamadou Sakho, but were still heading for elimination on away goals until Croatian defender Lovren headed the winner in stoppage-time.

With the Anfield faithful roaring with delight all around him, Lovren said he was impressed with the way Liverpool refused to accept defeat against Klopp's former club.

"It's an amazing feeling. It's one of the best games in the last two or three years," he told BT Sport after the 5-4 aggregate triumph.

"We never stopped believing in ourselves. It is a great effort from everyone. We didn't expect we would start like we did."

Liverpool's incredible comeback was spurred by the vociferous support of the Anfield fans, with the famous Kop end imploring their team to keep attacking in the closing stages.

Sakho was quick to salute the supporters for their contribution, saying: "The most important thing was the team played with heart and the fans never leave us. It's a win for the Liverpool country."

The dramatic manner of Liverpool's revival will place the match among the great European nights in Anfield's illustrious history.

Divock Origi had given Liverpool hope when he scored their first goal early in the second half and the Belgian striker said the game will be one he will never forget.

"We can tell our children and grandchildren," he said.

"When we scored the first goal we felt it was going to be a special moment."