"He spit on me. Actually spit on me. And my daughter was coming down the stairs and she saw that," Houston told the daytime talk show host during the 24th-season premiere of The Oprah Winfrey Show on Monday. "He had such a hate in his eyes for me."
Houston, 46, explained that following the incident, Brown pushed her against the wall and things got bloody. "I took the phone and I hit him over the head with it. And he just fell out on the floor," she said.
Besides her troubled marriage to Brown, Houston also opened up about her "heavy" drug use following her success with The Bodyguard.
"We were lacing our marijuana with [rock cocaine]," Houston admitted. "It's almost like heroin and cocaine speedballing, but you level it off with the marijuana, okay?"
Houston also recalled when her mother Cissy Houston came to her house with sheriffs in hopes to get her daughter to rehab.
"She said, 'I'm not losing you to the world. I'm not losing you to Satan,'" Houston recounted. "She said, 'I'm not doing this. I want my daughter back. I want you back. I want to see that glow in your eyes, that light in your eyes.'"
The second part of Houston's interview is scheduled for Tuesday (check local listings).