The shooting happened just before 3 p.m. in the 6600 block of West Sam Houston Parkway South.
Officers said the suspects demanded customers cell phones and money from employees.
When a patron fought back, officers said a suspect shot him in the stomach.
According to police, the victim was taken to a hospital for medical treatment and is in stable condition.
The suspects took off with hundreds of dollars in cash.
Investigators have only described the suspects as two young males.
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