"I've never witnessed anything like that", he continued.
"The manager has been pushing me all season and shouting at me for not taking the game by the scruff of the neck at times, providing those kinds of moments, being the one shooting and making the difference", said Oxlade-Chamberlain, whose Liverpool form has earned an England recall.
"Slowly it is starting to pay off".
It was the midfielder's delicious strike that was the pick of the lot, however, and Oxlade-Chamberlain was quoted by the Daily Star as he spoke of his delight at the goal that handed his side the initiative on the night.
The midfielder claimed that Liverpool's clean-sheet was nearly as important as their goals and speaking to RTÉ Sport he said: "The nil is always massive, it gives us a great chance to get there and get a goal and that sets us up to see it home".
"You don't need reminding how big a game that is going to be, especially at Goodison", Oxlade-Chamberlain added.
Eamonn and James Clarke
"I think it's the same for Theo really, he needed to get away".
"City are an fantastic football team but they are only human and you put anyone in a pressure environment in an atmosphere like that maybe it can disturb them. I showed myself that if it's on more often I can keep doing it". But I wasn't too happy [with my performance].
"That's the way I've always been".
Oxlade-Chamberlain was annoyed with himself, "disappointed", for not being better on the ball, particularly in a second half when City's dominance of possession was absolute but without the necessary level of objective to really hurt Liverpool. He also claimed Jürgen Klopp's team were ideally suited to the Champions League and the latter stages in particular.
"That's all good [but] all players can improve and that's where he can improve of course as well".
"We definitely have qualities that are suited to this competition", he said. The three boys up front this season have stood out in how clinical they have been. "We had a lot of talks".
"Now, he's flying, you can see the training at Liverpool that they must do".