SHANI DEVA

For Shani or Saturn related problems and during the dasa or antardasa of Shani:
1. Worship Lord Hanuman.
2. Recite Hanuman chalisa or any other Hanuman stotra.
3. Japa of Shani mantra: Om pram preem proum sah shanaischaraya namah, 19000 times in 40 days.
4. Recite the Shani stotra:
Nelanjan samabhasam ravi putram yamagrajamChaaya martand sambhutam tam namami shanaischaram
5. Donate a buffalo or black til (sesame seeds) on Saturday.
6. Fasting on Saturdays.
7. Pooja: Hanuman pooja
8. Wear a 14 mukhi Rudraksha.
For all Saturn related troubles Dasharatha Shani Stotra of is an excellent remedy.
Rahu
For Rahu related problems and during the dasa or antardasa of Rahu:
1. Worship Bhairava or lord Shiva.
2. Recite the Kalabhairav asthakam.
3. Japa of the rahu beeja mantra: Om bhram bhreem bhroum sah rahave namah, 18000 times in 40 days.
4. Recite the Rahu stotra:
Ardha Kaayam maha veryam chandraditya vimardhanam
Simhika garbha sambhutam tam rahum pranamamyaham.
5. Donate: Udad dal or coconut on Saturday.
6. Fasting on Saturdays.
7. Pooja: Bhairav or Shiva or Chandi pooja.
8. Wear An 8 mukhi Rudraksha.
9. One of the best remedies for rahu is reciting the first chapter of Durga Saptasati.