You probably mean "five pillars" of Islam, for which the Related Question below addresses.
If you actually meant "five killers" of Islam, as this is not a common term, it would not be clear if you were referring to the worst killers among Muslims or if you were referring to the people responsible for the most Muslim deaths.
Probably the people best known to Muslims who killed large quantities of Muslims are: Hülegü Khan, the Popes of the Crusades, Stalin, and "The Amorphous West".
Probably the best known mass killers or feared leaders among Non-Muslim populations that claim to be Muslims are: Bin Laden, Aurangzeb, Almanzor (Spain in the 900s C.E.), and Tamerlane.
They are called the five Islam pillars. Refer to related question below.
probably thinking of the Caph system
The Five Pillars of Islam . Refer to question below.
No, it is not one of the five pillars of Islam.Refer to question below for more information on the five pillars of Islam and on Jihad.
They are five pillars of Islam faith. They are not materialistic pillars as the building pillars. These pillars of Islam are referred to in question below.
The Five Pillars of Islam are five basic acts in Islam, considered mandatory by believers and are the foundation of Muslim life. They are summarized in the famous hadith of Gabriel.
The five pillars of Islam are Sahahadah, salat, Sawn, Zakat, and Hajj. For information on those Islam pillars refer to the questions and the link listed below.The Five Pillars of Islam are aspects of faith and worship that are central to the practice of the religion.
The Five Pillars of Islam.
The five pillars of Islam are the basis of Islam religion. Denying any of these pillars intentionally expells the Muslim from Islam. That is why it is important for any Muslim to follow these five five pillars very closely. Refer to question below for more information.
Salaam brothers and sisters These two pictures above show the five pillars of islaam
the five piklla
They are five Islam pillars and not three. Refer to related question below.