Most of us would have noticed, as the battle b/w Krishna and Narakasura is in progress, Krishna uses all his weapons- viz- Sudarshan Chakra, Kaumodaki, Nandaka, Sharanga and Panchajanya.
Here is a sloka in praise of all of Vishnu's weapons-
Sphurad sahasrara Shikhadhi theevram,
Sudarshanam Bhaskara koti thulyam,
Suradvisham prana vinasi vishno,
Chakram Sadaham saranam prapadhye. 1 {Sudarshan Chakra}
I surrender always to the Vishnu's wheel,
Which is sharper than thousands of flames,
Which is equal to billion suns,
And which takes out the life of Rakshasas.
Vishnor mkhothonila poorithasya,
Yasya dwanir Dhanava dharpa hantha,
Tham Pancha janyam, sasi koto shubhram,
SAnkham sadaham saranam Prapadhye. 2 {Panchajanya- Conch}
I surrender always to Lord Vishnu's conch,
Which makes sound due to the air from mouth of the Lord,
Whose sound humbles the pride of Rakshasas,
And which shines like billions of moons.
Hiranmayim Meru samana saram,
Koumodhakeem daithya kulaika hanthrim,
Vaikunta vamagra karabhimrushtam,
Gadham sadaham saranam prapadhye. 3 {Koumodaki - Mace}
I surrender always to Lord Vishnu's mace,
Which is golden and shines like mount Meru,
Which is Koumodhaki, the destroyer of Rakshasa clans,
And which is lucky to be touched by the left hand of Vishnu.
Raksho uraanaam katinogra kanadach-,
Chethakshara sonitha digdha dhaaraam,
Tam Nandakam nama Hare pradeeptham,
Gadgam sadaham saranam prapadhye. 4 {Nandaka-sword}
I surrender always to the sword of Lord Vishnu,
Which is hard, powerful and shines red due to the blood,
Which flows when it cuts the heads of Rakshasas,
And which is called Nandaka and shines in the hand of the Lord.
Ya jjayani nadha sravanath suraanam,
Chethamsi nirmuktha bhayani sadhya,
Bhavanthi daithyasani bana varsha,
SArngam sadaham, saranam prapadhye, 5 {Sharanga - bow}
I surrender always to the Sarnga bow of Vishnu,
Whose sound heralds victory in the mind of devas,
And whose presence removes the fear from their minds,
By reminding of the arrow down pour against Asuras.