There are four yogas as per Hindu mythology. Of this the current yuga is called as Kaliyuga. In this yuga it is not possible for ordinary human beings to keep fasting or do meditation or go to hills or forests for deep Tapas!
Hence to save all the human beings it is the Grace of Mighty Sri Lakshmi narasimha swamy alone can help timely. As you all know when Demon King Hiranya asked his son Bakta Prahlad where is Sri hari immediately within a fraction of second came out of pillar. Hence we all should worship him to get immediate solution to the burning problems in this fast world!!! The mantra for worship is as follows:
Yasya Bavath Bagtha janarthi hanthugu
pithurthva manyeshva vichrya dhoornam
sthambhevathara sthamananya labyam
lakshmi narasimham saranam prabhathye.
ukram veeram mahavishnum jwalantham sarvathomukam
nirusimham bheeshanam badhram mrithyum mrithyum namamyaham.
srimathe lakshmi narasimha parabrahmane namah.
Of all the temples I find Namakkal Temple a very rare and immediate boon to worshippers. The temple was made out of rock by Pallava kings.
In this temple Sri mahalakshmi temple is there and she is very famous and helped great mathemetician Ramanujam to solve difficult theorms by answering his queries in his dreams.
In the same temple complex we can find Sri Hanuman standing tall without any roof. It is said that Sri Hanuman eyes are in same line with the swamy foot.
The following slokas are worth for reciting.
1. Sri Lakshmi Narasimha Karavalambam
2. Sri Lakshmi Narasimha Runa Vimochana Stotaram
3. Sri Mantrarajapatha Stotaram