Munster ended a four-game losing streak against Leinster with a 26-17 triumph on Saturday, while Edinburgh retained the 1872 Cup.
A victory over Zebre saw Benetton close to within three points of third-placed Scarlets in Pro14 Conference B.
La Rochelle's perfect record in the Challenge Cup was ended by Bristol, but Clermont Auvergne claimed a fourth win out of four.
Alex Allan's dismissal did not prove costly as Glasgow Warriors beat the Scarlets, while Leinster scored 59 in a victory over the Dragons.
The Cheetahs claimed their second Pro14 win of the season as Daniel Maartens crossed twice in the final 21 minutes against Benetton Treviso.
There were wins for Connacht and Ulster in Saturday's Pro14 action.
Munster overturned a 14-point deficit to beat Glasgow Warriors thanks to Rory Scannell's monster penalty with the final play.
Having been beaten 82-21 by La Rochelle six days earlier, Enisei were once again outplayed by the French club.
Worcester Warriors had lost 11 away games in a row in the Challenge Cup, but ended that sequence with a brilliant showing in Paris.
Leinster are five points clear at the top of Conference B after the defending champions beat Munster at the Aviva Stadium.
Olly Robinson's late try completed a second-half comeback from Cardiff Blues as they secured a Pro14 victory over the Cheetahs.
The Southern Kings claimed a first Pro14 win of the season and consigned Glasgow Warriors to a first loss in Port Elizabeth.
Glasgow Warriors are the only club to have won each of their opening three fixtures after overcoming the Cheetahs.
Pro14 champions Leinster were defeated by last season's runners-up Scarlets in a tense clash on Saturday.
John Cooney's kicking got Ulster up and running, while Connacht's Craig Ronaldson fell just short and Munster ran riot in Pro14.
Rory Best scored two tries but Ulster's bid to overtake Edinburgh came to an end with a 24-24 draw away to Munster.