Should he lead people in prayer, reciting the Basmalah silently, or should he not lead them in prayer to avoid bearing the sin of those who believe it must be recited aloud?

Many scholars hold the view that the Basmalah should be recited silently before the Fatiha, while others hold that it should be recited audibly. Each group has its evidence from the Sunnah (definition). We believe that you should lead the prayer and recite the Basmalah audibly to unite the hearts of the worshippers.