Morris was given a flagrant-2 foul and ejected in the first quarter, although the Clippers went on to win the game and clinch the first-round series in six games. According to the NBA, the veteran's history as a repeat offender contributed to a higher fine.
Doncic was also fined $15,000 for throwing the ball at a referee in a separate incident.
Morris and Doncic had an earlier confrontation in Game 5 of the series after Morris stepped on Doncic's injured ankle.
Though he didn't say the first incident was definitely intentional, Doncic believed the hard foul in Game 6 told the full story.
"It was a terrible play," the All-Star said after the game. "What can I say? It's two games in a row he did something like that. I really hoped the first game it wasn't on purpose, but looking back on the foul this game, you know what I think. I don't want to deal with that kind of player—just move on."
Morris responded on Instagram: "Cry me a river."
The veteran was able to avoid suspension as the Clippers progress in the NBA playoffs. They will face the Denver Nuggets in the Western Conference Semifinals with Game 1 set for Thursday.
Morris averaged 12.8 points, 5.7 rebounds and 1.3 steals per game in the last series and could be an important factor going forward for Los Angeles.