Why God could not save Gandhiji from Godse? Gandhi believed a Universal God but shot dead while his pray, why?

Today is Gandhi Jayanti (Birth anniversary). He is a respectful world leader. I put forward a thought for this day. Have you ever thought that why God (Almighty-?) is helpless to save the life of good people? There are stories in epics as examples for God's greatness (Prahlada and Markandeya). But in real life we are unable to see any example. Comment honestly.