Noor is facing up to 12 and a half years in prison for third-degree murder and up to four years for the manslaughter charge.
On July 14, 2017, Noor shot and killed Ms Damond, then 40, after she approached his police car in an alley after she had called police to report hearing a woman scream behind her house.
Noor shot Ms Damond, originally from Sydney, in the abdomen at point blank range.
Noor and his partner, Matthew Harrity, testified Ms Damond startled them.
The former policeman explained at the time that he fired his gun after he heard a bang on his car, saw his partner was scared, then saw Ms Damond at his partner’s window, raising her arm. He explained to the court that he feared he and his partner were being targeted in a raid.
In her closing arguments this week, prosecutor Amy Sweasy said “this case has tragedy compounded on top of tragedy”.
“(Ms Ruszczyk) is gone because she was tragically and violently gunned down by a police officer she called for help,” she said.
“He (Noor) knew exactly what he was doing.
“He pointed, he aimed and he killed her.”
Ms Damond had been living in the US with her American fiancé, Don Damond. The pair were planning to marry just weeks after her death.