Lambert: I'm running out of superlatives for Benteke
Benteke bagged the all-important winner in the closing minutes against Reading.
And Lambert was quick to praise the powerful forward in his post-match press conference.
He said: "Christian has been excellent. You run out of things to say about the big guy. He's a fan favourite!
"His general game is outstanding. He has been brilliant. He's been excellent. His general game is superb.
"He's only 21. He might not hit his peak till his late 20s. He has playing ever so well.
"He's been fantastic for this club and for the national team. And he's getting better.
"He is developing his whole demeanour, he's growing up. Remember he's only young but he's a strong lad with good ability too. He's just been great. Very good.
"He does get chances too in matches. He always does - whether it be headers or shots. He's been great. I am delighted with him."
Lambert also praised his side for "holding their nerve" in the fiercely competitive clash with the Royals.
He knew it was going to be a tough game after the weekend exertions against Arsenal and so it proved.
He continued: "You have to keep your nerve. They did that.
"Credit to the back four too. Nathan has not played for a long while. Enda came off. We put Eric on. But we still withstood it.
"I was impressed with the spirit of the team - full credit to them for keeping on going.
"We always looked a threat. It was Brett's first game for a number of weeks too. He did great as he did against Arsenal.
"Stevie gives you something too. I was more than happy.
"I thought it was just a big result. I knew the game against Arsenal took a lot out of us. I knew this would be a tough game. But this is what happens in this league. It's a big win."
Lambert will now assess the fitness of Enda Stevens [ankle] and Ron Vlaar [calf] ahead of the QPR match on Saturday.
He added: "Enda went over on his ankle. It was a blow because he was playing well. I will need to see with him later in the week.
"With Ron, I don't know. Again, we will see how he is in the next few days. He is a big player for us."
Lambert admits he's also trying to get to the bottom of the problem with Richard Dunne [groin].
He added: "He had a test on Saturday. We are now waiting to find out. It's a bit frustrating with that."
Snap up your tickets and back the boys against Stoke.