Arsenal keeper Jens Lehmann has been banned for two European matches.
Lehmann will miss the first two European games next season
The 35-year-old twice threw water over the referee and his assistant following the second leg of Arsenal's Champions League encounter with Bayern Munich.
The incident happened in the tunnel at Highbury after Arsenal won the match 1-0 but went out 3-2 on aggregate.
A Uefa statement said: "Lehmann was found guilty of a 'deliberate pestering act' that displayed a 'striking lack of respect towards the referee'."
Arsenal are bidding to qualify for the Champions League next season as they lie in second place in the Premiership.
Lehmann would miss the first two games but his future at Arsenal has been brought into question.
The German was dropped by manager Arsene Wenger after making several crucial errors.
Although he has since regained his place, he has been told by Germany coach Jurgen Klinsmann that he must be playing regularly next season if he is to win a place for the 2006 World Cup.