Leicester Tigers have suspended forward Ed Slater for two weeks.
Following a citing, the Tigers said club officials reviewed an incident during Saturday's European Champions Cup pool clash against Glasgow at Welford Road.
Leicester lost the game 43-0 - their record European defeat - as Glasgow stormed into the quarter-finals.
Slater, 28, faced an internal disciplinary hearing and was found guilty of striking an opponent.
In a statement, the Tigers said: "Ed has been banned for two weeks and he will miss the (Anglo-Welsh) Cup ties against Northampton Saints and Saracens.
"He regrets his actions in the heat of a vital club match and will look forward to his return to action following his suspension."