Going by definitions of what a protocol and report are.
validation protocol. (FDA) A written plan stating
how validation will be conducted, including test
parameters, product characteristics, production
equipment, and decision points on what constitutes
acceptable test results.
test plan. (IEEE) Documentation specifying the
scope, approach, resources, and schedule of
intended testing activities. It identifies test items, the
features to be tested, the testing tasks,
responsibilities, required, resources, and any risks
requiring contingency planning.
test procedure. (NIST) A formal document
developed from a test plan that presents detailed
instructions for the setup, operation, and evaluation
Test report (IEEE) a doc describing the conduct and results of the testing carried out for a system.
As it is a requirement to plan what you are going to do, then a protocol with incorporated test sheets is needed.
The person executing the tests uses the protocol as the instruction of what to do and the test sheets record the results.
The norm would be after the testing is complete a brief description stating the outcome of the test and referencing the protocol followed.
So my view is
You end up with one report containing the protocol and test results.
Not the other way round a protocol containing the test results.