1) In Visual Studio click Resharper > Options
2) In the Options dialog select C# Naming Style
3) Select Override common settings. The custom naming rule for lamdas doesn't exist in the common naming styles.
4) Click Advanced settings
5) Click Add, which wil bring up
The two critical options to select are the Lambda parameter in the Affected Entities listbox and the all_lower option under Name Style. Et Viola! You will no longer get squiggles under your lambdas.