To obtain the blessings of Rahu, it is recommended to chant the mantra 'Om Durgaye Namaha' 108 times every Wednesday. Additionally, donating copper or black sesame seeds to a temple or the less fortunate on Saturdays can help increase Rahu's auspicious power. Furthermore, participating in the chanting of the Shri Rahu Stotram on Saturdays can also be beneficial, as it will create a strong energy field around you and intensify Rahu's blessings.