This example might help. Note there are three collections inside the Scene Collection, and two view layers (accessible from the drop-down at the top of the outlinner. The sphere collection has a sphere and a reddish light. The Room collection has a copy of the sphere but no reddish light. In the room the sphere is not visible to the camera (check object properties) but does cast shadows.
One view layer has the room collection, the other has the sphere collection, and they are rendered separately and can then be composited. You can exclude any collection from a view layer by right clickintg on it and selecting ViewLayer->Disable from View Layer.
lighting_scene.blend (890.0 KB)