Simply pass all the voronoi cells into the first input of solid difference component as a grafted list (right click select graft) and your geometry into the second input of the solid difference component
Also, invest some time in explaining your goals clearly. It seems to me that what you wanted to do in the first post of this topic is a different thing all together than your last post.
Lastly, do share a minimal version of your files so that we can help you better. Read The sticky post of this category