In the Sundara Kanda, there are two poignant places where
Hanuman, while destroying the Asoka Vani and kiling several Rakshasa warriors, declares his identity and 'victory song' as it were. The significance of this song lies in the fact that it occurs verbatim in two places in the Sundara Kanda and once in the Yuddha Kanda.
I am giving it below:

Jayatyatibalo Ramo Lakshmanashcha mahabalah
Raja Jayati Sugrivo Raghavenabhipalitah
Dasoham kosalendrasya ramasyaklishtakarmanah
Hanuman shatrusainyanam nihanta Marutatmajah
Na Ravanasahasram me yuddhe pratibalam bhavet
Shilabhistu praharatah padapaishcha sahasrashah
Ardayitva puriim Lankam Abhivadya cha maithilim
Samriddhartho Gamishyami Mishatam Sarvarakshasam

These verses were very inspiring to me. Let us pray that the whole Hindu community imbibes the infinite energy underlying this song!