The National Anthem of Palestine
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The word "fedayee" (or fida'i) appears several times in the anthem, and is difficult to express in a single word or two in English, hense it has been left untranslated in the lyrics below. The word refers to a man (the feminine form is "fida'iya", plural is "fida'iyeen") who is willing to sacrifice his life. The object that he will sacrifice to can be anything, his lover, tribe, religion, etc., but in the modern sense it is usually meant as a sacrifice to your country.
The stamp above is Ali Ismael, the anthem composer, issued by Egypt in 2005, a set of five Famous Egyptian Artists.