Mohamed Salah believes Liverpool were victim of aggressive tackles and were not protected by the referee as they beat Monterrey 2-1 to qualify for the final of the FIFA Club World Cup.
Salah set up Naby Keita for the first goal and played a key role that saw substitute Roberto Firmino score a 91st-minute winner after Rogelio Funes Mori had equalised for Monterrey.
"I think it was a tough game," Salah told a news conference.
"They were very aggressive against us and all of us were complaining about our legs and they were aggressive.
"I think the referee doesn't protect us too much. But I'm not here to complain about it.
"I think in the end we showed our quality and we won in the last minute. I think we deserved it."
The Mexican side had two players booked - Jesus Gallardo and Leonel Vangioni - to Liverpool's one caution, but Klopp's side committed 13 fouls to their opponents' nine.