Liverpool face a Herculean task in the semi-final second leg to overcome a 3-0 deficit to Barcelona but Klopp says his approach to the fixture remains the same despite the disadvantage on the scoreboard.
Mohamed Salah was taken off on a stretcher against Newcastle on Saturday following a heavy collision with the opposition's goalkeeper Martin Dubravka.
"Obviously it is special after enjoying a number of good years here and I am grateful to Liverpool for my time here and how they received me as player", said the Uruguay global.
"It's not a precaution, it's a concussion", said Klopp.
"He feels OK, but it is not good enough from a medical point of view, that's all". Without the Premier League's leading goalscorer and Firmino, Klopp could be forced to play both Divock Origi and Daniel Sturridge in attack alongside Sadio Mane.
Suarez scored as the Catalans racked up a 3-0 first-leg lead at Camp Nou last week, and was an obvious pick as the Liga champions completed their post-match media duties on Monday evening.
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"The reason I am playing at Barcelona, at the elite level, is because of Liverpool".
Klopp told reporters: "Salah can not play tomorrow".
"I will always be thankful for that and the heritage of the club".
"I think there will be more applause than whistles", Suarez said, perhaps optimistically. "You can't play against Barcelona and tell the world, 'watch this'".
Barca were knocked out in dramatic fashion to Roma at the quarter-final stage last season, losing 3-0 in the second leg on Italian soil after beating the Serie A club 4-1 at home. Liverpool play their final match of the domestic year on May 12 against Wolverhampton.
"As long as we have 11 players on the pitch we will try to celebrate the Champions League campaign, either to give it a proper finish or another go". "It's going to be a hard game because we know the fans will be really getting behind their side".