Sunderland won with Brian Brobbey scoring in the 90th minute for the 2-1 win.
On how they manage the in, Le Bris said afterwards: "Through our identity. We didn't start well with an early mistake. We stayed composed, well-aligned with what we wanted to do.
"It's a tough place, they are intense with their crowd but the team reacted well. We were emotional at half-time because it matters, this game is important and we didn't want to lose.
"We stayed together, pushed together and the second half was good for that. We suffered at times but we enjoyed as well some opportunities and played good football."
On the emotion of the day, he continued: "It was about the whole event. We want to win and to be proud of our club. I really appreciated the second half, even the way the team reacted after the goal conceded, stay calm, stay composed and seize your opportunity when it comes.
"We started this game with six or seven players injured. It means the others stepped up and it shows the quality of the group. Today they did really well, I am proud and really pleased."
On the reported abuse from the crowd towards Lutsharel Geertruida, he added: "I don't really know what happened, but it's not acceptable. The referee acted well because he reported the problem which is the first step. He seems ok, but we will see."