User blog comment:B214/Volume 23 discussion blog/@comment-30924344-20170409190547

Just saying one of the reasons possibly why Indra wants to fight Shiva, is because of the time Shiva humilated him basically in the original myth. Shiva gets in his way disguised as a yogi to test his knowledge and not knowing this, Indra becomes infuriated Shiva is not budging out of the way so he threatens him with his thunderbolt. Shiva paralizes his arm, neutralises the thunderbolt and scares Indra shitless by his eyes glowing red of anger and opening in his third eye which nearly kills him. I'm sure being a God of War he would hold a grudge on that.