Ocon was continually under attack from Hamilton in the restarted, rain-shortened race but was able to defend his fourth-place despite the seven-time world champion being in his slipstream numerous times to eventually cross the finish-line half a second ahead of the Mercedes.
When asked about the 'wet and wild' Suzuka race, Ocon said: "It's very good that we've scored that many points. It was looking like we had nothing in the beginning, you know - there was no racing, the weather was really bad.
"Eventually, [the rainfall] reduced. I was still not confident that we would be able to go [racing again], but the track did clear quite quickly and it was good to finally get going," Ocon said.
"From there on, the fighting with Lewis, I enjoyed it a lot - it was a lot of fun.
"It was a bit of a karting battle, trying different lines; not one corner [was] I not watching my mirrors! It was definitely good fun [and] I'm very happy with the outcome."
The Japan result was great for Alpine points-wise, as Ocon's teammate Fernando Alonso claimed seventh to bring the team a total of 18 points - which puts them P4 in the constructors' standings, 13 points ahead of McLaren with four races remaining.
Ocon was proud of the teams overall improved showing at Suzuka, and said: "It's been great. It was only a matter of time until we could really show what the car was capable of, and I think finally we've done it.
"We brought the update to Singapore, it was not really working, [at] Monza we had issues. But when we are [there] in the end, it is there," Ocon added.