Did the Battle of Lepanto save Christianity?

She is well known in Luxembourg, bearing the title “Beloved Lady of Luxembourg.” She is formed out of wood of the lime tree, and has a heart of literal gold. Her right foot rests upon a moon with the face of a Turk, to commemorate, it is said, the victory of the papal, Spanish and Venetian fleets over the Turkish fleet at the battle of Lepanto in 1571 C.E. She carries, too, a golden key. Certainly Luxembourg’s “Holy Lady” is a graven thing, and it is adored and served with pomp and fervor as though it were a divine being.
But consider Jeremiah 10:3-5 - "For the customs of the peoples are a delusion. It is just a tree of the forest that is cut down, Worked by the hands of the craftsman with his tool.  4 They adorn it with silver and gold And fasten it with hammer and nails so that it will not fall over.  5 Like a scarecrow in a cucumber field, they cannot speak; They have to be carried, for they cannot walk. Do not fear them, for they can do no harm, Nor can they do any good.”
Christianity flourishes because millions have put into practice Jesus' teachings and living by the Bible's principles, not because of something that happened in Lepanto.

The Battle of Lepanto stopped Ottoman Sunni Islamic expansion into Europe. Contrary to popular misbelief; the Ottomans did not really persecute religious minorities, such as Christians (esp Eastern Orthodox Christians), until the last days of the empire, who were scapegoated (and massacred) for Ottoman Turkey's demise. Many Jews fled European anti-semitism throughout history by moving into Ottoman territories. It was this pattern that gave birth to the idea of the Jewish homeland.