Tomorrow (Tuesday morning) there will be is a partial sun eclipse in Israel and surrounding areas.
There is no special Bracha said on seeing an eclipse, though on meteors and comets one says "Oseh Ma'ase Breishis":
Blessed are You... Who makes the work of creation.
Source: Kitzur Shulchan Aruch 60:2
Monday, 27 Tevet 5771