Manchester City came back to the top with a 1-0 win over Tottenham thanks to Phil Foden's first goal in the Premier League.
Sergio Aguero, 18, was pushed back by the Argentine international at the end of the center of Bernardo Silva.
Guardiola joked that he was a genius for bringing in Foden for his second Premier League debut. The 18-year-old scored the only goal after five minutes.
"What's the quality of the manager I'm a genius He scored a goal," Guardiola said. "Phil is an amazing player – we needed that ability to put pressure on and he has the quality to get into the box and every time he plays, he scores a goal or has the opportunity to score goals.
"He has the ability to play in small spaces, it's an amazing experience for him and I have a lot of confidence in him."
It was the third meeting between the two teams in the last 10 days after the spectacular double in the Champions League quarter-finals, which allowed Tottenham to score goals on the outside after City witnessed a goal stop marked by the video assistant referee.
"The last two days have been very difficult for us," Guardiola said.
"We could have lost the Premier League today, after Wednesday it was really tough, and as a footballer, I could not have done what my players did today. The title is still in our hands. "
City was thirsty for revenge against the Etihad coming out of the blocks and taking the early lead.
However, despite their dominance of most of the first half, the hosts failed to strengthen their slim advantage and thanked goalkeeper Ederson for preventing Son Heung-Min from allowing him to play. equalize.
There was a hard blow for Pep Guardiola's men just before half-time when Kevin De Bruyne had to leave the field with another injury after having reacted badly by taking a shot from the edge of the box.
"It was something muscular, which is normal after injuries and three or four games of several minutes without preparation," Guardiola said.
"Maybe he'll miss the four games and the FA Cup final, I do not know how important the impact is, we'll see tomorrow, but I think for the next game he will be absent. "
The Spurs escaped the penalty early in the second period after Dele Alli sent the ball to Kyle Walker's arm, but referee Michael Oliver gave the visitors a penalty.
The year's player of the year candidate, Raheem Sterling, nearly triumphed over City, but his point blank goal was blocked by Tottenham goalkeeper Paulo Gazzaniga.
City held on to the top – at one point over Liverpool – while the loss left Tottenham only three points behind sixth-place Manchester United, who lost one game.