The governor of Maku, a city in West Azarbaijan province, said on Wednesday the guards were killed in a clash with separatist terrorists.
Hassan Abbasi added that another soldier was also wounded in the clash which took place in Maku border region, Presstv Reported.
He said that the injured guard is now in stable condition in hospital.
Terrorists operating in neighboring countries have repeatedly targeted Iranian military and security forces serving in border provinces.
The recent attack came less than two weeks after an IRGC member was killed by "counter-revolutionary" elements in western Iran, in clashes where a number of the terrorists were also shot dead.
The serviceman was injured in an encounter and shoot-out with a counter-revolutionary group in the city of Sarvabad in Kurdistan province, but succumbed to his wounds en route to hospital.
An unspecified number of terrorists were also killed or wounded and a sizable amount of their weapons and ammunition was destroyed, according to the Public Relations Department of the IRGC unit responsible for the security of western borders.
Earlier last month, terrorists killed three IRGC servicemen enlisted with the Hamzeh Seyyed al-Shuhada Base of the Corps’ Ground Forces during clashes in the Piranshahr County of West Azarbaijan province. One more was injured during the attack, which targeted a vehicle carrying the forces at the entrance to the county.
Iran has urged its neighbors to engage in meaningful and effective counter-terrorism efforts aimed at rooting out malign border activities.