Below is a guide in obtaining Police (NBI) clearance:

o Go the Philippine Embassy (phone: 483-1585)
o Fingerprinting process is only from 1pm – 3pm (it will take you 45mins maximum) and bring with you the following:
 2 x 2 photograph with white background (taken not more than 3 months)
 Copy of Passport
 QAR 100.00 fee
o The embassy representative will hand over the accomplished fingerprint form (stamped, signed and photo attached)
o Send the following documents to the Philippines along with the following:
 Personal copy of old NBI clearance (if you still have it for faster processing)
 Clear copy of passport copy
 Signed authorization letter for your representative (relative, friend, agency)
 In addition, you can send copy of valid IDs with your signature just to be on the safe side
 Applicable fees (info to follow)
o Sending of documents through Q-post office would cost: QAR 55.00 for EMS (door to door delivery in 4 days)
QAR 9.00 for registered mail (2 weeks)
o Requirements need to go to the main NBI office in Caloocan, Metro Manila for obtaining NBI clearance (I do not have the info for other regions Php115)
o After obtaining the Renewed NBI Clearance, proceed to the Department of Foreign Affairs to authenticate the document (processing fee Php100-200)
o Bring the documents back to the Philippine embassy in Qatar for stamping and authentication and QAR100.00 fee
o Go to the Ministry of Foreign Affairs close to the corniche for attestation (QAR20 they only accept debit/credit cards)

Hope this helps!