"Now we know we have every incentive to not only make the knock-out stages but also to stay in contention in Europe's premier competition."
Saracens are keen to get revenge on their French opponents after they suffered their only defeat in the competition to Biarritz in cruel fashion earlier in the tournament.
"We might come to regret the 50-metre penalty goal that Dimitri Yachvilli kicked to give them a one-point win," said De Kock.
"There was a losing bonus point but we have moved on and are now in a position to determine where we end up in this tournament.
"Biarritz are a massive team and very dangerous. They have got everything to play for and this match will go a long way to determine who will qualify for the quarters.
"However, we have the calibre of team to do well and progress in the tournament and all the players are desperate to push on from here."