A seasoned NYPD detective who nearly a decade ago jumped into action to save the life of a Russian tourist stabbed by a madman while visiting Los Angeles was promoted Thursday – as he urged his fellow Finest to “be the person who helps.”

Albert Ramos, 58, who joined the NYPD in 1994, reflected on the heart-pounding November 2015 ordeal as he was promoted to Detective First Grade along with five other cops at One Police Plaza.

“We did our job, but the most impactful moment was when I came home and my son was 11 years old at the time and he said, ‘Dad, I’m so proud of you,’” Ramos told The Post. “And that’s when I knew that, hey…you don’t need to be recognized, but that’s what it’s all about, helping people – being part of this great organization, which I just can’t see myself leaving.”

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