One of the most powerful and benevolent energies in Hinduism you can connect with is the energy of Hanuman.
Hanuman is learned in all scriptures, he is a powerful warrior, master of pranayama as well as the greatest devotee of God in the form of Sri Rama.
By saying the mantras of Hanuman, you can connect with his energy and thereby be blessed with his powerful, healing and protective warrior-devotee energy.
Here is a link to how to get started with Hanuman Mantra sadhana.
Otherwise, you can give these mantras specifically aimed at black magic and evil spirits here a go: