documents for passport application after Naturalisation

Dear Advisors,
sorry for a rather trivial question, but I have to prepare to apply for British passport as soon as possible.
I have recently gotten my application for citizenship through naturalization approved. My ceremony is in a week. So I don't yet have my certificate yet.

I will have to travel rather soon, so have started preparing other documents for the application for passport. On GOV.UK they give a list of documents required, which includes my passport, translated and certified Birth certificates, parent's birth certificates, parent's passports, etc. Some of those seems to be completely irrelevant, as my parents have nothing to do with the UK.
Which documents will I really have to provide?
I need to somehow get the originals from the country of birth right now, so that I can apply for passport right after the ceremony.
Looking forward to your reply.

All that is required, in original, is your
- Certificate of Naturalisation
- Uncancelled Passport(s)
The form caters for all scenarios.

Thank you very much indeed!

They currently also request the passport you first entered the UK with. Note that it takes 2-3 weeks to get your British passport and supporting documents.