A crucial one-on-one save at Tottenham against Heung-min Son helped City win in the final fortnight of the season as they went onto to lift the Premier League title.
“To be fair it was a bit too much for me,” Ortega told City's website.
“I don’t like to be the main person because at the end it’s just what I’m doing every day.
“I try to save balls. And at the end it’s not more than that.
“I think everyone knew after the game there is no reason to lose the Premier League because before, this game was like the main game for the Premier League because everyone was talking about this game, how tough Tottenham is.
“We had just scored the first goal (at the new Tottenham Hotspur Stadium) in the FA Cup so I knew it was not our favourite place where we play.
“So after the game it was just like happy faces. The pressure was a bit gone so it was a nice and easy celebration.”
He added: “First of all to play in this team, it is easy. Because the quality here is so high so this is one point, the other point is like I said before, it’s just what I want to do and what I do every day.
“And it’s just like the surroundings are a bit different but this is what we want - to play in big stadiums, nice atmospheres, for trophies so there is no point for me to be scared or nervous.”