# What test do I use to obtain the P-value for the likelihood ratio test statistic (in R)

I've manually calculated the $$G^{2}$$ test statistic for my 2x2 table, that is,

$$G^{2} = 2\sum_{i}\sum_{j}n_{ij}log(\dfrac{n_{ij}}{u_{ij}})$$

What I now want to know is what R command can return to me the corresponding p-value (with say 2 degrees of freedom). I've been using the pschisq test but I'm rather certain that I should not be using this test for the $$G^{2}$$ test statistic.