Thomas Tuchel said that his Paris Saint-Germain players had achieved "a physical and mental victory" after they survived a comeback from Nimes in the second half to win 4-2 in Ligue 1.
The champions They were 2-0 at halftime after goals from Neymar and Angel Di Maria put them in control at the Stade des Costieres, but Antonin Bobichon and Teji Savanier brought the level of hosts.
A clinical end of Kylian Mbappe restored PSG's lead and Edinson Cavani concluded a tense contest in stoppage time, but the drama was far from over.
Mbappe, who had borne the brunt of some subtle challenges throughout the match, was sent off in the final seconds by a push over Savanier, who also saw red for his challenge in the front.
Tuchel said his players knew that a hostile atmosphere awaited them and, despite Mbappe's red, he was satisfied with the way they handled the situation.
"There was a lot of resistance today, we knew and we responded, so I'm very happy wi that," he told reporters.
"It was not a tactical game, but physically and technically it was a great victory.
" The atmosphere was very difficult. The game was very complicated with many duels in horrible territory.
"It was a real cup game."