Rarely a player to be injured, it takes a lot for the Egyptian to be forced off but he clearly felt he could not continue.
That happened in the 2018 Champions League final against Real Madrid, when a rough Sergio Ramos tackle around the half-hour mark saw him forced off with a shoulder problem.
Liverpool fans will have been fearing for the worst when the world-class star was substituted early against Chelsea, and will be hoping for positive updates in the coming days and weeks.
Liverpool have three games remaining in their season after the Wembley outing, with Premier League ties against Southampton and Wolves set to come before the tie against the Spanish giants on May 28.