The incident happened on normally quiet Holland Avenue in the Van Nest section around 12:15 a.m. Friday.
Police said the victim, who is a college student, was walking home at the time, when the suspect approached.
The victim, Paula -- who doesn't want her last name used -- said she suddenly felt someone's presence.
"My first instinct was to grab onto the phone and that's when he slashed me and pushed me to the ground and kicked my face and took my purse," Paula said.
He tried to grab her right hand, then attempted to steal her cellphone. When that was unsuccessful, he slashed her in the face.
Paula let out several loud screams. A neighbor heard her yell "he's killing me, he's killing me!"
She fell to the ground, where the suspect kicked her, took her purse and fled the scene.
"I was screaming as loud as I can so I guess that kind of frightened him, and he ran the other way," Paula said.
Paula was taken to Jacobi Hospital, where she was treated for a gash to her face. She said she received at least three layers of stitches.
Paula spoke with Eyewitness News reporter Tim Fleischer Friday:
No arrests were immediately made.
The suspect is described as a Hispanic male in his 30s, standing approximately 5-feet, 5 inches tall.
Anyone with information is asked to call police.