To grill a person means to interrogate them. It is a slang term, a metaphor. کباب کردن شخص به معنای بازجویی از او است. این اصطلاح عامیانه استعاره است.

"Stop grilling me" means "stop asking me questions/accusing me of wrongdoing".

To question or interrogate someone intensely and relentlessly (about something). It's negative and informal (often used when someone is being accused of something). EXAMPLE: Don't grill me about it! (Don't ask me questions about it). I wish my parents would stop grilling me about where I go with my friends at night! If you need more help, let me know. Kirsty

If you run into some cannibals and they capture you, “stop grilling me” assumes a literal meaning. Basically you’re telling them to stop cooking you.

Hi there, i would be thankful to translate this sentence in English لیوان و از رو نیز بردار.