Stellini, who has taken over Tottenham on a temporary basis from the absent Antonio Conte, understands Chelsea’s quality despite the Blues sitting in 10th place.
Graham Potter’s side have collected just two wins from their last 14 games in all competitions and another defeat on Sunday could intensify the pressure on the Chelsea manager.
“A team like Chelsea can recover and win many games in a row. But we have to think about our game and not about what happened afterwards,” Stellini said.
The Italian reiterated that he remains focused on preparing his own team as Spurs look to break their eight-game winless run against Chelsea in the Premier League.
“We have to think about ourselves and our way of being better, our form and the goal we want to achieve. Not thinking about what the opponent can or can’t do,” he said.
Sunday’s match could be another start for Emerson Royal in the form that has flourished in recent weeks.
The Brazilian captured applause for his performance in Spurs’ 1-0 win over Manchester City in the Premier League earlier this month and then scored against West Ham last week.
Stellini said: “Emerson needed time to understand the difference in football culture. But at the same time, he has to be himself. He has to prove who he is.
“Sometimes this type of player loses confidence if he doesn’t feel love around him. We don’t have to stop to give him this, but make him understand the difference in the type of football”.
The full-back’s renaissance has raised questions about whether he should be considered for the Brazil squad.
“If he keeps playing like this, I think it is mandatory for Brazil to call him. I hope that can happen,” Stellini said.