Do Srivaishnava-s have any specific shloka that can be recited during the seven-and-a-half-year period of Saturn’s phase?

Generally, for Srivaishnava-s any shloka on Perumal will lighten the effects of all malefices. Elders state that by reciting Apamarjana Stotra the ill effects of Saturn will reduce. Dasavathara Stotra is beneficial from the ill effects of all the planets as it is composed of Lord Narayana who is the God of all planets. In particular ‘kurma avatara’ shloka can be recited during the phase of Saturn. One can recite this shloka several times.