Side note - pretty sure Spurs got a 2-2 draw in the reverse fixture as well. If we come away with anything like a 1-1 or better it's a good result and I'd be confident.
Spurs did get a 2-2 draw, that was made to look worse because they weren't awarded an obvious penalty in the 90th that would have made it 3-1, immediately before Benfica was given a penalty to level the match.
Also. Look at Spurs starting XI that drew Benfica away. Brad Friedel, Danny Rose, Kyle Naughton, Ezekiel Fryers, Aaron Lennon, Andros Townsend, Nacer Chadli, Gylfi Sigurdsson, Sandro, Nabil Bentaleb, Soldado.
I count 2 starters. 2. To draw against a Tottenham side like that, at home, is pathetic.