Here’s DN Brasil’s take on the election results… a bit more on the scary side 
Impacto Eleitoral: Portugal Vira à Direita e Imigração em Foco
Although the time is not stated in the programme, DN Brasil understands that the government is planning to increase the length of residence in the country from five to 10 years before applying for Portuguese nationality. A similar proposal is in the programme of Chega and the Liberal Initiative (IL), which guarantees approval of this project in Parliament. At the same time, DN Brasil knows that the aim is to maintain immigration ‘with rules and humanism’.
Edit: in my own research (see below), the IL sought to “increase the number of years to obtain nationality” and Chega wanted to “limit immigration” - but neither were as explicit as the AD w.r.t. number of years, etc.