Siman 571

(128.) I heard from our master, teacher, and Rabbainu — that there is a tiklah [enclosed space] in which several great men of the generation have been caught. Therefore sometimes they pray as is proper in the manner of the great ones — and also do much good. But even so sometimes the opposite, G-d forbid. And this is through a known nation that has captured and conquered the region etc. But now — since many Jews dwell among them — because of this it is not as bad as before. May G-d guard us...