Check if node is displayed as page? In Drupal 6 to check if node is displayed as page we can use:

Select the condition to add - > Check a truth value

Truth value - > &lt;?php echo $page ?&gt;

How to do this in Rules 2.x for Drupal 7? I don't see the condition with name Check a truth value
Assuming I have interpreted what you're trying to do, try adding the Event "Content is viewed", with the Condition "Content is of type" and configure the Condition to be of node type: 'Page'. If you could explain exactly what you're trying to achieve I may be able to suggest a better solution!