Do Shaivas accept that Rama and Krishna were incarnations of Vishnu?
How do Shaivas view and interpret these Itihasas?
As per Shiva Purana: PART TWO RUDRA SAMHITA: SATI KHAND: Chapter 24,
[Lord Shiva said to Sati:]
- The fair-complexioned one is younger brother Laxman, the incarnation of Shesha. The elder brother is complete incarnation of Vishnu. He is called Rama.
So, you can see that Shiva Purana (important scripture for Shaivas) portraits Rama as an incarnation of Vishnu.
Also, as mentioned in this post, Ramcharitmanas itself is a narration of Parvati's Qs and Shiva's answers only. And, at many places, Ramcharitmanas portraits Rama as Vishnu's incarnation.