The Reds have been drawn against Unirea Urziceni in the round of 32 in the Europa League. The Romanian champions hammered Rangers 4-1 at Ibrox in the Champions League group stage so Benitez won't be underestimating them.
"It will be a tough game because they were in the Champions League. I was following their group because I have some friends in Sevilla and so I know it will be difficult. But we are Liverpool and we have to have confidence," said the boss.
"The main thing for me is that the game isn't until February so we have plenty of time to prepare and analyse the other team. We will be playing a side from another league and another level but winning their title means they are a good team. They went very close in the Champions League so we know it will be tough."