The Reds are one point behind leaders Manchester City heading into their final game of the season against Wolves at Anfield.
Liverpool are in high spirits after a stunning 4-0 win over Barcelona on Tuesday booked their place in a second consecutive Champions League final.
Guardiola and Klopp are locked in a battle for the Premier League title that will be settled in the final matches of the season on Sunday.
Jurgen Klopp will be without two of his most potent attacking weapons for what is already a massive challenge.
Liverpool will face Barcelona in the first leg of semi-finals on May 2 after beating Porto in the quarter-final.
Eder Militao scored a consolation for the hosts 21 minutes from time, but this was another miserable night for them after they lost 5-0 to the same opponents on this ground a year ago.
The Reds travelled to northern Portugal in a strong position going into Wednesday's second leg after a 2-0 win at Anfield last week, when Naby Keita and Roberto Firmino both scored.
Liverpool thrashed the Portuguese side 5-0 in last season's Champions League last 16, but Klopp said the tie is tougher than it seems.
Having seen Mane work through his drought successfully, Klopp believes Salah will soon see his luck change in front of goal as well.
Liverpool responded impressively to City's win against Watford on Saturday, rallying strongly after falling behind to a controversial opening goal from Burnley.