Camille Grammer just got a restraining order against her boyfriend, claiming he brutalized and terrorized her in a hotel room, leaving her bruised and battered.

In her declaration, filed by attorney Larry Stein and obtained by TMZ, Camille claims on October 16, she was in a Houston hotel room with boyfriend Dimitri Charalambopoulos ... recovering from cancer surgery just days before.

At 1:30 AM Camille says a woman started texting Dimitri and ended up calling him and screaming.

The phone call triggered an argument between Camille and Dimitri.  She claims at that point he grabbed her by the hair, twisted it around his hand and repeatedly pulled her head into the bed and its headboard.  She says he pulled out clumps of her hair in the process.

Camille says she tried to call for help, but Dimitri smashed her iPhone.

But it didn't end there.  Camille claims Dimitri "squeezed my nose between his finger and pushed upward forcefully, covering my mouth in an attempt to silence me to prevent me from breathing."

Camille also claims Dimitri wrestled her on the hotel bed, "repeatedly slamming my head and face into the furniture and completely immobilizing me."  She claims he said, "I wanna smash your head in.  I'll give you a reason to call the cops." 

Camille says the abuse went on for 40 minutes to an hour as she feared for her life and begged him to stop.

She says as Dimitri was about to leave he said he would knock her out if she moved from the bed.

Camille, who claims she felt Dimitri would kill her, ended up bruised and battered.

A judge just granted a temporary restraining order ... ordering Dimitri to stay 100 yards from Camille and her 2 kids.