References

Mantra
Om namo bhagvate mahaapurushaay sarvgun sankhyaanaayaantaayaavyaktaay nam iti 
[one can transliterate in Hindi then read it for easier reading]

Nivaatkavach
These were killed by Arjun. When Arjun went to Swarg Lok to take Divine Astra from his father Indra, Indra asked him to kill Nivaatkavach Daitya, because he himself could not kill them because they were bestowed by Brahmaa Jee that they wouldn't be killed by Devtaa.

Sankarshan Rudra
They are eleven in number and all have three eyes and have Trishool in their hands

Saramaa
Once Pani named Daitya hid Prithvi in Rasaatal, Indra sent Saramaa named she-messenger to look for her. Daitya expressed their desire to extend friendship with Saramaa, but Saramaa didn't agree for that and said to them praying Indra - "Hataa Indren Panayah Shaydhwam" (Hey Pani Gan, You sleep on Prithvi after being killed by Indra) That is why they were always afraid of Indra.