Agastya Maharshi says to Rama that “you would kill Ravana within a moment,” and left that battlefield, Agastya had come to Rama to teach this holy hymn of Son God. With the grace of Gods he encourages Rama with his meditation power.
Hearing the holy words of Agasthya with even minded Rama became rejuvenated and came out of momentary fearful situation; his clouds of worry got dispelled, with enthusiastically started chanting the prayer of Son God.