Pascal Papé faces a spell on the sidelines after being cited for his knee on Jamie Heaslip on Saturday.
The French second row received a yellow card for the incident where he appeared to knee Heaslip in the back as he joined a maul.
And he has since been cited for the incident which occurred in the 52nd minute and will now have to appear before an independent disciplinary committee later this week.
If found guilty, Papé could face between three and 52 weeks suspension.
Heaslip was forced off a few minutes later as a result of the back injury and will undergo a scan to see if he has suffered any longer term damage.