Saviour Protocols: If a <SEPT> INFANTRY or <SEPT> BATTLESUIT unit within 3" of a friendly <SEPT> DRONES unit is wounded by an enemy attack, roll a D6. On a 2+ you can allocate that wound to the Drones unit instead of the target. If you do, that Drones unit suffers a mortal wound instead of the normal damage.

So if there is any number of DRONS units within 3" of INFANTRY or BATTLESUIT unit when it takes damage, you roll ONE D6. If you roll 2+ you can then allocate that wound to the DRONES unit you choose.

How many DRONES units are nearby does not matter at all, you only make one roll, then you designate which unit takes the damage.