Nginx is available only in EPEL:
In SUSE Linux Enterprise Server 12 you need to add the Nginx repository, before installing Nginx:
You also need to configure php-fpm
(the path to configuration file may vary slightly depending on the service pack):
cp /etc/php7/fpm/php-fpm.conf{.default,}
sed -i 's/user = nobody/user = wwwrun/; s/group = nobody/group = www/' /etc/php7/fpm/php-fpm.conf
In SUSE Linux Enterprise Server 15 you need to configure php-fpm
(the path to configuration file may vary slightly depending on the service pack):