The meanings of the tattoo on my leg:

What is a Hamsa Hand? (Also Spelled Hamesh, Chamsa, Khamsa)
The hamsa is an ancient Middle Eastern amulet symbolizing the Hand of God. In all faiths it is a protective sign. It brings it's owner happiness, luck, health, and good fortune.
The hamsa hand is known by many names—hamsa, hamsa hand, hamesh, hamesh hand, khamsa, and chamsa. It is also called the Hand of Miriam, named for Moses and Aaron’s sister.
Either hamsa hand can be worn with the fingers pointing up or down, and both are believed to offer its owner happiness, peace, and prosperity, as well as protection from the ayin ha'ra, or the evil eye.

Origin of the Hamsa Hand
Although the hamsa hand has been symbolic in Islam and Judaism for centuries, archeological digs in the Middle East provide evidence that the hamsa pre-dates these religions and originated with the Phoenicians and was used as a protective symbol for an ancient Middle Eastern goddess. The hamsa hand has always been associated with a female entity offering protection from evil and misfortune.

Hamsa Hand Symbology
The word “hamsa” or “hamesh” means five. There are five digits on the hamsa hand, but the number five has additional symbolic meaning in the Jewish and Islamic traditions. Five (hamesh in Hebrew) represents the five books of the Torah for Jews. It also symbolizes the fifth letter of the Hebrew alphabet, "Heh", which represents one of God’s holy names. It symbolizes the Five Pillars of Islam for Sunnis, and the Five People of the Cloak for Shi'ites.
In the Jewish religion, the Jewish hamsa hand also symbolizes the Hand of God. Many Jews believe the hamsa pendant symbolizes the Hand of Miriam, the sister of Moses and Aaron. In the Islamic faith, the hamsa hand symbolizes The Hand of Fatima, daughter of the Prophet Mohammed. Many Jews believe that the five fingers of the hamsa hand remind its wearer to use their five senses to praise God. Hamsa hands often contain an eye symbol, which is a powerful talisman against the evil eye. It is most often worn as a hamsa necklace, but can be found as a decorative element in houses, on key chains, on other jewelry items, and is quickly gaining popularity as an amulet in baby carriages. In addition to averting the gaze of the evil eye, it brings its wearer or owner happiness, luck, health, and good fortune.

Hamsas for Peace in the Middle East
In recent years, activists for peace in the Middle East have adopted the hamsa hand. Because hamsa hand symbology is believed to predate most modern religions, those who actively support a peaceful resolution to the ongoing Israeli conflict believe that wearing the hamsa hand highlights not only the similarities of Judaism and Islam, but also the similarities of the origins of the religions. The hamsa symbol is believed to originate from an ancient Middle Eastern religion, and some Jews and Muslims wear the hamsa as a gesture for hope, peace, and prosperity in Israel and other areas of the Middle East.