The Reds suffered a 1-0 loss to Chelsea FC at Stamford Bridge last weekend following France international Olivier Giroud scored the winner in the first half.
Liverpool FC’s failure to secure a point in west London left the door ajar for Chelsea FC to sneak a top-four finish despite a difficult season under Antonio Conte.
The Merseyside outfit are in third place in the Premier League table but have played one game more than Chelsea and Tottenham Hotspur.
Spurs are a point behind Liverpool FC in the race to secure a Champions League spot, while Chelsea FC are three points adrift of Jurgen Klopp’s side.
The Merseyside outfit will take on current holders Real Madrid in the Champions League final in Kiev later this month.
Former Spurs star Jenas believes Liverpool FC need to beat Brighton on the final day of the season to set the right tone ahead of the Champions League final.
“I think the reason Liverpool had been looking so strong was because, defensively, they tightened up. If you look at what has happened to them of late, then they are shipping goals again,” Jenas told BBC Sport.
“That has always been their Achilles heel under Klopp and they need to put it right before they face Real, who we know are a team for the big occasion because can turn it on when it matters.
“Liverpool must prove to themselves they can do the same, which is why they need this game against Brighton.
“They need to show they can be that well-oiled machine again and raise their game to dispose of this team and make sure they qualify for the Champions League. Then they can kick on for Kiev from there.
“I think they will do it, but I am sure it is something Klopp will be talking a lot about this week to make sure they do.”
Liverpool FC were 7-6 aggregate winners against Serie A giants AS Roma in the Champions League semi-finals.
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