The Bayern Munich custodian saw footage of the Portuguese attacker taking spot-kicks prior to the Champions League fixture and was confident he would send his shot to the left
The Germany international saved efforts from the ex-Manchester United forward and Kaka, before Sergio Ramos blasted his attempt over the bar to give Bastian Schweinsteiger the opportunity to send Die Roten to the tournament decider against Chelsea.
"I always prepare myself for such situations," Neuer told Bild. "Our goalkeeping coach, Toni Tapalovic, showed me on his laptop before the match how Ronaldo usually takes his penalties.
"I learned that Ronaldo prefers to send the ball low to his left. In the penalty shoot-out, I was convinced that he would aim for his favourite spot."
The German keeper then mocked Ramos for his failed attempt, saying: "I did not know that he would prefer to send it over the bar."
The Champions League final at the Allianz Arena is scheduled for May 19.
Starting last month and continuing for 10 weeks, Goal.com is publishing exclusive extracts from Luca Caioli's new book, Ronaldo: The Obsession for Perfection. The sixth extract, published on Friday, looks at his display for Man Utd in the 2008 Champions League final against Chelsea in Moscow, including the Portuguese's missed penalty in the shoot-out. Don't miss it!