The Algerians saw off South Korea 4-2 on Sunday to boost their chances of reaching the last 16 in Brazil.
They now need to avoid defeat against Russia on Thursday if they want to progress at the tournament.
"We played some very attacking football [against South Korea], and we need to repeat that against Russia. It won't be easy but it wasn't easy [against South Korea] either and that didn't stop us from keeping our calm and playing some good football," Brahimi told FIFA.com.
Brahimi scored his country's fourth goal against Korea on Sunday.