Virgil van Dijk fumed "I didn't go down for no reason" as he hit out at the refereeing decisions from Liverpool's 1-1 draw with Napoli.
The Reds went behind in the first half against the Italian club on Wednesday, with Van Dijk suffering an injury in the build-up to the goal.
Replays showed that the Holland international was elbowed by Dries Mertens, who went on to score the opener for Napoli.
But a VAR review absolved the Belgian of any wrong-doing, and the goal stood.
Reacting to the decision and the quality of referee Carlos del Cerro Grande's game, Van Dijk told beIN SPORTS: "I didn't go down for no reason.
"I won the ball. Obviously I think he [Mertens] didn't even want to challenge the ball at first, so he touched me.
"I think it's a foul, the referee didn't have his best day today, and that is what it is."
On whether Liverpool panicked after going a goal behind, he added: "No, so far this season we have never panicked.
"Obviously it's a pity to concede and the way we conceded as well but we had to do what we planned to do and I thought the second half was good.
"We kept pressing and going at them and they had no opportunities apart from the goal, but we are disappointed not to win today."
Liverpool have to get a result in their final group game against RB Salzburg to qualify.
But Van Dijk is looking forward to what will be a challenging game in Austria.
"It's difficult but it's good to face difficult challenges," he said. "We know it will be tough but we're ready for it. We have to be ready for a difficult night, and we will be."
