Manuel Neuer, that's why - "the best goalkeeper around," according to the Frenchman.
Indeed, Ribery says he predicted a Neuer save ahead of the spot-kick, which is exactly what transpired as Ozil faltered from the spot after winning the penalty himself.
The 30-year-old did, though, admit that Arsenal were much more of a threat than Bayern in the opening 10 minutes. But the penalty save was never in doubt in his mind.
"Arsenal played well and the first 10 minutes were not easy for us," the Frenchman told Sky.
"I said ahead of the penalty that Neuer would save it. I trusted Neuer and he did it. He is the best goalkeeper around."
And Ribery, who was injured during the Champions League last-16 clash, went on to add more misery to the Gunners, revealing that he will most likely forego international duty and instead make his return in the second leg at the Allianz Arena.
"I am fine and I started running on the pitch again two days ago," he added. "Now I have to get my fitness back.
"The second leg against Arsenal is a realistic comeback date, at the moment I have a good feeling about it. The friendly for France against Netherlands is probably too early."
Arsene Wenger will be hoping Ribery doesn't make the clash, as well as relying on his penalty takers to be a bit more clinical should they get the chance in Germany.
What did you make of Ozil's penalty?
image: © Ronnie Macdonald