Jesus last command to His disciples before going back up to heaven was to “go and make disciples of all nations …” (Mt. 28:19-20). Today we rightly view this as Jesus mandate to His church. So if you desire to see those who don’t yet know Jesus come to know Him, and those who do already know Him come to love Him more and obey him more fully, then there are endless opportunities to do this in Portugal. If you have a heart for discipleship, then Portugal needs you.
You could be involved in discipleship in any number of ways, including in the local churches that are already established, through church planting initiatives, through theological education, or a combination of any or all of these. There are as many opportunities as there are people.