"It was a very important goal for getting the win and we are in the next round of the Champions League, so we are very happy," said Riera.
"But I'm sure I will wait a lot of matches to score a goal like that one again!
"We were talking in training about about shooting from quite far out - sometimes I try it and it works, and sometimes not.
"But I was in a great position and tried a shot. I have to try shooting like that more often - some players like Stevie or Xabi like to try shots from far out and they have scored some great goals.
"It can be a good idea to shoot like that, especially at Anfield because a lot of teams come to defend and it is difficult to get chances in those matches."