How to defend an accusation of embezzlement to get visa cancellation and passport

Actually, I want advice about my cancellation.

There is one issue for my company, I took the two project payment (total of AED 8510) without the company's knowledge. I already got a termination on Nov 26 and after the notice period, they found this issue.

Then I gave this payment to the company. After that, they're going to sue legally at the police station. Now the company's stand is not to give the passport & visa cancellation.

They have doubt I took more money & someone behind me. I want to know what is the maximum impact in this case. Please advise on what I can do to get my cancellation & passport.