Europe did not offer a reprieve as Tottenham were held to a goalless draw with Partizan Belgrade in the Europa League on Thursday.
However, Bentaleb believes that the visit of the Baggies this afternoon represents a good opportunity to get back to winning ways.
"We have to be ready for Sunday's game and I think we need to get back to a winning mentality," Bentaleb told reporters. "I think it will be a really good test for us on Sunday.
"You know there is always ups and downs in a season and it is all about how you bounce back. I think Sunday is a really good game for us to bounce back.
"We can't afford to take them lightly. We have to focus on us and if we are 100 per cent and play our football, we have nothing to fear."
This afternoon's clash between Spurs and Albion gets underway at 1.30pm at White Hart Lane.