You have the complete docs at NAIA. But dont forget to bring w/ you P750 for terminal fees at Immigration. Also if your ticket were purchase from Qatar, you need to pay travel tax around P1,600-P2,000 for economy flight.

At Doha airport you need to prepare your show money, it used to be QR5,000. "They may or may not ask you". Or if you got any valid visa/master card, it would do!