There are also various organizations you can give to that exist for the support of the Middle East’s Christian minorities. One such organization is found in a link in my signature.
A very good way to remember the Christians is to read and learn their histories. Do what you can to share the knowledge you learn with your fellow Catholics and other Christians, as well as others. One of the reasons persecution and attempted genocide goes on in full view of everyone is that the various groups seem so inscrutable to outsiders. Discriminatory policies and prejudice go unchecked because people just don’t know or care to know the true history of the places where the Christians are. And this is not just the history of a given community, as though the Christians are historical accidents of Roman, Greek, Spanish, American or other colonization. The history of countries like Iraq, Syria, Lebanon, and even Yemen, what is now Saudi Arabia, and Oman is Christian history – indigenous Christians spread throughout the world from the nexus point of Palestine. It will be buried and lost to the detriment of the entire world if we do not cling to it as our birthright as Christians, no matter where we originate.