Mohamed Salah felt Liverpool's players were not protected from Monterrey's "very aggressive" tactics in the Reds' Club World Cup semi-final victory on Wednesday.
Liverpool advanced to the Club World Cup final in Doha with a 2-1 success as substitute Roberto Firmino scored a 91st-minute winner.
Jurgen Klopp's Liverpool had taken the lead through Naby Keita, but a side missing influential defender Virgil van Dijk through illness were pegged back by Rogelio Funes Mori, with the Champions League holders requiring an in-form Alisson to remain on level terms thereafter.
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Salah felt the Reds were good value for their win, though he was unhappy with Chilean referee Roberto Tobar's handling of the game and Monterrey's tactics.