The forward made it 13 goals in as many league games this season as he struck in each half at Stade Pierre-Mauroy for the champions.
With nine goals in his past seven league appearances helping PSG to a 10-point lead at the top of the table, Neymar's spectacular form has won the admiration of his head coach.
"He has an incredible ability to accelerate and dribble. He was exceptional at times," Tuchel said on Sunday.
"He's been playing at this level for weeks and has offered us games of this caliber every three days.
"He's a boy who is capable of simple things and then exceptional things in the next minute. I'm happy for him as this will give him a lot of confidence."
Tuchel was happy with the way PSG largely nullified the threat of a Lille side whose previous home defeat in the top flight was back in March last year.
"We had a lot of the ball in the first period and a bit less in the second, when our counter-attacks weren't all successful. We lost easy balls sometimes," Tuchel said.
"It was still a good game overall that we managed to control. It wasn't that obvious that we faced a very strong opposing team, unbeaten at home, with a very strong coach and a really good atmosphere."
Thiago Silva was replaced at half-time, but Tuchel stressed the change was a precaution as the centre-back had felt some discomfort.
However, the decision to take off left-back Abdou Diallo with 14 minutes remaining was down to concern about his use of the ball.
"Thiago tried to play through with some pubis pain, but it wasn't very comfortable for him," Tuchel explained. "That's why we took him off at half-time. But I don't think it's too serious.
"As for Diallo, he lost the ball three times and that was pretty dangerous. It was better for him to go off."