What did Jesus say you should do when you see the abomination of desolation in the holy place?

Flee to the mountains

And just hope you're not pregnant or nursing woman, or that the end of the world comes in winter or on the Sabbath!

When ye therefore shall see the abomination of desolation, spoken of by Daniel the prophet, stand in the holy place, (whoso readeth, let him understand:)

Then let them which be in Judaea flee into the mountains. ...

And woe unto them that are with child, and to them that give suck in those days!

But pray ye that your flight be not in the winter, neither on the sabbath day. Matthew 24:15-20