Ryan was dismissed after an illegal clearout in the first half.
James Ryan has been handed a three-match ban following his red card in Ireland's defeat to South Africa on Saturday.
The Leinster second row was dismissed after an illegal clearout in the first half.
Ryan's ban will be reduced to two matches if he takes part in World Rugby's Coaching Intervention Programme.
He will miss Leinster's URC clash with the Dragons this weekend, as well as their opening game in the Investec Champions Cup against Harlequins on Saturday week.

Ireland Finish Junior World Championship On A High
Fierce Heat Is Not Affecting Match Quality At Wimbledon Quarter Finals
Brian Dowling Confirmed Kildare Hurling Manager For New Term
Tuesday Morning Sports Update
Tottenham Complete Signing Of Midfielder Sandro Tonali
Brazil's Neymar Calls Time On His International Career
Weekend Club GAA Results
Kruger And Kostyuk Get The Action Underway at Wimbledon