The Danish international told BT Sport that the away goals scored in Turin will give Mauricio Pochettino's men a boost ahead of the return leg at Wembley.
"We are sure we will have chances at Wembley," Eriksen said. "We go into that game full of confidence and we're looking forward to it.
"We could have [capitulated]. Away from home in the Champions League. It showed character.
"It was an excellent performance after that and we take two away goals to Wembley. Great result."
Spurs return to domestic action this weekend, with an FA Cup tie against Rochdale on Sunday.