We can go even further back than that. If God created life the evolutionist assumption that all change is due solely to materialistic forces cannot be sustained.
That is not an assumption of evolution. Scientific evidence indicates that all life descended from a common ancestor; the LUCA, or last universal common ancestor. Where the LUCA came from cannot be probed by most of the tools of evolution - for example, you can't do phylogenetic analysis on a single unbranched line. I suppose in principle you could do analysis on the LUCA's genes, but except in a few cases (e.g. ribosomal proteins) that may never be practical.
The LUCA could have been transported to earth from another planet, it could have arisen abiogenetically; or it could have been created by a higher being. Deciding between these possibilities doesn't really impact evolution.