Dear Vinay:
The Original Krithya Sadhana Prayog Published In Mantra Tantra Yantra Magazine By Poojya Shri Gurudeva Nikhileshwaranandji( Aka Shri Narayan Dutt Shrimali) About 15 Years Ago Was A Lighter Form Of Samharini Krithya And It Produced Very Good Results. The Sadhana Should Be Started On Any Amaavasya Day At Night After 10 Pm. Wear Black Clothes, Place Krithya Yantra In Front Of You Facing South, Do One Mala Guru Mantra For Protectrion, Then Chant 21 Rounds Of Malas With Krithya Mala With The Following Mantra..please Note That You Have To Take This Mantra From Gurudev Himself By Means Of Dheeksha. I Had Taken This Dheeksha From Big Guruji Shri Narayan Dutt Shrimali And Am One Of His Oldest Pupils And You Are Welcome To Consult Me Any Time Or Consult Jodhpur To Ger Your Doubts Cleared.
The Mantra:
Om Kleem Kleem Mam Shathrunam Uchhataya,maraya Vachan Sidhi Mam Ajna Palaya Krithya Sidhim Phat.
This Has To Be Done For 5 Days. One Time Meal. Not To Tell Any One If You Experiience Any Thing.
Other Nams You May Find In A Book Called Tantra In English Written By Poojya Shri If It Is Available Which I Doubt.
Regards
Jai Gurudev
Balan Iyer
Tantra Mantra Yantra Saadhak