Steve Sarkisian's Ex Can't Touch His USC Lawsuit Money!

If Steve Sarkisian wins his $30 MILLION lawsuit against USC, his now ex-wife won't get a dime ... this according to court docs obtained by TMZ Sports.

Sark's divorce from his longtime wife, Stephanie, has been finalized -- ending their 19 year marriage.

There was a ton of money at stake (he reportedly made more than $10 million coaching at Washington and millions more at USC).

Sources connected to the ex-couple tell us there was a private settlement in regards to the bulk of the family fortune.

When it comes to cars ... he gets the Mercedes, she gets the Land Rover. He also has to cut a 1 time check for $293k as an "equalization payment."

They also agreed on no spousal support, no child support and joint custody of their 3 minor kids.

But get this ... when it comes to Steve's $30 mil wrongful termination suit against USC, the two worked out a deal in which he gets 100% of any judgment if he wins.

It's unclear what he had to give up to keep her hands off any potential judgment, but you can bet it was substantial.