If this was a concrete floor, using concrete or cement to patch the hole for firerated/firestopping would not be permitted. The cement patch when heat from the fire is applied to the patch would shrink and not adhere to the original concrete floor opening.
There are products on the market that are specifically listed for this "Firerated Assembly".
The "Assembly" depends on several factors, such as the floor material, pipe, and the annular space around the opening of the floor.
