The English version is well-known :
God grant me the serenity to accept the things I cannot change,
the courage to change the things I can,
And the wisdom to know the difference.
Nå'e yo' minahgong-ho. Måhgong means peace, tranquility, quiet. In Chamorro, when one asks God for this or that, the request is often expressed as "God give me my patience," or "my courage" and so on. Måhgong, by the way, is not the same as mågong, which means the easing of pain or illness.
Minatatnga. From matatnga, meaning boldness, fearlessness, courage.
Tinemtom. From tomtom, or wise.