Nginx Apache code to nginx?

Can somebody advice the right equivalent code for this?
From Apache to Nginx.

Code:

RewriteEngine on
RewriteCond $1 !^(index\.php|images|robots\.txt|assets|install)
RewriteRule ^(.*)$ /index.php/$1 [L]

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Thanks a lot Eva for the links.

 

Script is:
Wilylab Invoice : Recurring & Multiple Company

 

I fixed it now using the link Eva gave.