Which preposition to use with aegis

of Occurrences 23%

Had I my way, I would mark out a circle of a hundred miles in diameter, and throw around it the protecting aegis of the constitution.

against Occurrences 1%

It was estimated that the cost of the church would be 1000 pounds, which Mr. Becconsall willingly agreed to pay; but religion has no aegis against "extras"they will creep in, are irrepressible; and, in accordance with this fatal philosophy, the church in Avenham-road cost in the end nearly 2000 pounds, which he paid without even grumblinga privilege all Englishmen have the right to exercise freely after they have paid the piper well.

in Occurrences 1%

Then war is only a process of development, which threatens terribly and shakes the locks upon its aegis in the face of the brutes which infest its path.

over Occurrences 1%

The stranger held his lantern high, so that its ray fell on his face, and with that Mr. Mortimer groaned and collapsed upon the lowest step, where mercifully his wife's ample shadow spread an aegis over him.

Which preposition to use with  aegis