How many movies have Fernando Poe Jr. and Romy Nario acted in together?

They have worked on 5 movies together! Their first movie together was Ang Daigdig Ko'y Ikaw (1965) while their highest rated movie together was Kalibre .45 (1980). They have not worked together since Batas Sa Aking Kamay (1987). They are most known for their action films together.