From Reb Ovadia’s Tshuva it didn’t sound like he would say Hallel. But if he did, it was not during Davenning. He also mentions that we don’t celebrate an As’chalta. In fact, by Puranus we go after the beginning, as in Tish’a Be’av, and by a Yeshua we go after the completion as in the 14th of Adar and Chanu Chaf Heh.
