Sri Mahalakshmi Ashtagam:

Shri Mahalakshmi
 

Mahalakshmi is the consort of Lord MahaVishnu, so it's believed that we should pray Mahalakshmi before praying Mahavishnu in any form, be it Rama, Perumal, Krishna, Narasimhar,etc.,to get His blessings.

Lyrics:

Namasthesthu Maha Maye sree Peede Sura Poojithe,
Sanka Chakra Gadha Hasthe Maha Lakshmi Namosthuthe!

Namasthe Garudarude Kolasura Bhayan Kari
Sarva Papa Hare Devi Maha Lakshmi Namosthuthe!

Sarvagne Sarva Varadhe, Sarva Dushta Bhayan Karee
Sarva Dukha Hare Devi, Maha Lakshmi Namosthuthe!

Sidhi Budhi Pradhe Devi, Bhakthi Mukthi Pradayinee
Manthra Moorthe Sada Devi, Maha Lakshmi Namosthuthe!

Aadhyantha Rahithe Devi, Aadhi Shakthi Maheswari
Yogaje Yoga Sambhoothe, Maha Lakshmi Namosthuthe!

Sthoola Sukshma Maha Roudhre, Maha Shakthi Maho Dhare
Maha Papa Hare Devi, Maha Lakshmi Namosthuthe!

Padmasana Sthithe Devi, Para Brahma Swaroopini
Para Mesi Jagan Matha Maha Lakshmi Namosthuthe!

Swethambara Dhare Devi Nanalankara Bhooshithe
Jagat Sthithe Jagan Matha Maha Lakshmi Namosthuthe!

Phala Sruthi

Maha Lakmyashtakam Stotram,
Ya Padeth Bhakthiman Nara,
Sarva Sidhi Mavapnothi,
Rajyam Prapnothi Sarvadha.

Here's an Audio-link for Mahakakshmi Ashtakam:

A very beautiful and soothing rendition by Karnatic Singer Sowmya!