Exodus 9:4, 6, 26

And Jehovah shall make a distinction between the cattle of Israel and the cattle of Egypt; and there shall nothing die of all that belongeth to the children of Israel.

And Jehovah did that thing on the morrow; and all the cattle of Egypt died; but of the cattle of the children of Israel died not one.

Only in the land of Goshen, where the children of Israel were, was there no hail.