Last week's games are an opportunity for Nantes. Auxerre will host Lens at home. So there's a good chance Auxerre can be beaten. It's not easy to fight with a powerful Lens. On the other hand, they will play against Angers, the last team of the league. They should definitely beat Angers. No score will be enough to keep them in the league except to win.
And for the last match in Ligue1 this time, it seems that Nantes will be easier to save from relegation because the last opponent is the team with the last rank in Ligue1. Meanwhile for Auxerre it seems that it will be difficult to save because the opponent is too heavy, namely Lens who is still consistent enough to continue winning until his last match. And it makes sense what you say because Lens is a very strong team and very different from Auxerre who are close to the relegation zone.
A very tense closing week for these two teams, they will determine their fate whether to stay in Ligue 1 or become one of the 4 teams that are relegated. Surely the burden is on Auxerre's shoulders at this time, because they will face a team that is far better than them. But despite all that, I'm sure Auxerre will play at full strength and will go all out in that decisive game.