The 35-year-old midfielder was banished in the 39th minute for a shoulder charge on Clermont's English fullback Nick Abendanon on Sunday.
He joined lock Romain Taofifenua - sinbinned six minutes earlier for stamping on an opponent - in the cooler, leaving Toulon down to 13 men in the early season round two clash.
Clermont - who beat Toulon in the French Top 14 final last June - made the visitors pay with Fijian wing Alivereti Raka scoring after the halftime siren. They scored again through centre Damian Penaud in the 51st minute to extend their lead.