TMZ has obtained the 911 call ... made by Manny Ramirez' wife Juliana after the MLB star allegedly slapped her during a domestic dispute inside their Florida home yesterday.
During the call, Juliana tells the operator, "Hi, my husband just hit me."
When the operator asks if she's safe ... Juliana replies, "He's not doing anything anymore 'cause he knows I'm calling the police."
Manny was arrested a short time later and transported to a nearby jail. He told cops he never hit Juliana ... claiming he only "grabbed" her.