As soon as one reacheas NAIA (Ninoy Aquino International Airport) before going to Qatar; He should have,

1. PASSPORT WITH QATAR EMBASSY (in the Philippines)AUTHENTICATION
2. TICKET (HARD COPY) with confirmed flight on departure date and arrival date going back after 1 month after Qatar visit as indicated in the Visa
3. Valid Qatar Ministry of Interior VISIT VISA HARD COPY
4. TRAVEL TAX / TERMNAL FEE
5. MOBILE PHONE (ROAMING for personal use)

Have a safe travel