Allah is the Preserver of Safety, the Dominant, the Guardian over all.
(This name is mentioned only once in the holy Qur’an as the name of Allah).
Allah is the Watcher over His creatures guarding all from danger, corruption, loss, etc.

After the corruption of the older revelations, the Qur’an comes with a twofold purpose: (1) to confirm the true and original Message and (2 to guard it, or act as a check to its interpretation. The Arabic word Muhaimin is very comprehensive in meaning. It means one who safeguards, watches over, stands witness, preserves, and upholds. The Qur’an safeguards "the Book", for it has preserved within it the teachings of all the former Books. It watches over these Books in the sense that it corroborates the Word of Allah which has remained intact in them. It stands a witness because it bears testimony to the Word of Allah contained in these Books and helps to sort it out from the interpretations and commentaries of the people which were mixed with it: what is confirmed by the Qur’an is the Word of Allah and what is against it is that of the people. For Allah is the Preserver of Safety.