Gomes believes that the win has convinced his Tottenham team-mates that they can go far in the competition - and in the Premier League - this season, a belief enhanced after missing the likes of key men Gareth Bale and Jermain Defoe on Tuesday night.
He said: "We are growing in confidence all the time because we finished first in the group and now we have come here and won.
"This sort of result will strengthen our belief to keep going. We always knew we could do well in this competition because we have a great squad.
"We can rotate our players now: tonight we lost Gareth Bale and Luka Modrić only came on in the second half but the lads who started did great.
"Before the start of the campaign we thought back to last season when we finished fourth in the Premier League and that made us realise we can go far in the Champions League."