Ulster is ar an talamh as well. The dialect generally lenites, but not for d/t. It's probably not mentioned explicitly in the GnaG page you linked because lenition doesn't occur here anyway (dentals rule). In another section, GnaG is explicit about it.
Maybe something like, Tá fuil ar an talamh mar gheall ar na políní -- There is blood on the ground because of the police. Or Dhoirt na políní fuil ar an talamh - The police spilled blood on the ground (literally; could also be 'pour')