We note the gadol R. Elyashiv is reported to be in critical condition at Sha'arei Tzedek Hospital in Jerusalem today.
Rav Amar, the Sephardi chief rabbi of Israel is reported to have said, "Klal Yisrael needs him, and he protects the entire generation. I call on all those praying to accept upon themselves to say Chapter 102 of Tehilim for his complete recovery."
For tefilot, his name is reported to be Yosef Sholom ben Chaya Musha.
(h/t Yeranen Yaakov)