Under current exceptional circumstances, you need to check relevant COVID regulations as well.
You will be required to undergo COVID testing in India or France. A mandatory quarantine may be ordered if the result is positive or you present symptoms.
Additionally, you will need to sign a certificate that you are symptom-free and give reason for your travel to France before you are allowed to board. If your reason indicated is for transit, you may be questioned on why your itinerary to Germany is not as soon as possible.
Ordinarily, a Fiktionsbescheinigung is considered to be equivalent to a residence permit under the following circumstances:
Fiktionsbescheinigung (Provisional residence document)
Only if the third box on page 3 is ticked –the residence permit continues to be valid. Entry is allowed only in connection with an expired residence permit or visa.
If the first or second box is ticked, the “Fiktionsbescheinigung” does not entail the right of entry without a visa.
If this applies to you, you can travel within the Schengen area without visa for short stays (90/180 rule) and can enter from whichever Schenge country to transit to the residence country.