The forward was on target in normal time as the Ligue 1 champions squandered a 2-0 lead.
After the match, video footage emerged of Neymar appearing to punch a supporter who was clearly winding him up.
The fan is said to have asked for a picture before changing his mind to humiliate the already angry Brazilian.
Now Neymar has taken to social media, to post his first message since the incident.
The caption read: “Nobody likes to lose, so I... who knows me knows how competitive I am and how much defeat shakes me.
“But losing is part of an athlete's life, makes us grow, makes us think, makes us BETTER.
“Happy to be able to play again, to score again and feel good on the pitch, but the biggest feeling today is one of sadness.”
The image showed Neymar looking sad with his hood up but the post did not reference the incident on the steps up to collect his runners up medal.
Speaking directly after the match to the media, Neymar hinted that some players must improve their mentality in order for the club to achieve their goals.
"We need to be more like men in the dressing room, we must be more united," Neymar said.
"I see a lot of young players who are, not lost exactly, but they lack more ear than mouth.
"They must listen more than they talk. Sometimes a more experienced guy speaks, and they answer back. The coach himself speaks, and they retort. This is not how a team goes far.
"We are more experienced, so they must respect us a bit more, listen a bit more. I had to do the same when I was starting out."